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Legislative diplomacy.

3. Exclusivity

The final dimension of the diplomacy power concerns the exclusivity of its residence in the executive branch. Because diplomatic functions are exclusive only to the extent allocated in Article II, the analysis here is derivative of the above conclusions on functional breadth and capacity. In short, the president possesses an exclusive power to execute various diplomatic functions on behalf of the United States, but nothing more. As explained in Part III below, Article I of the Constitution confirms the incompleteness of Article II power, and thus the absence of executive exclusivity in foreign relations, by allocating certain diplomacy powers to Congress.

B. Original Meaning

Historical sources are consistent with the view that executive power is functionally broad and suggest that the Framers understood the president as holding exclusive power to engage in sovereign diplomacy. (180) These relatively unremarkable observations, however, leave unresolved whether the original meaning of Article II is at odds with international communications by Congress. The following discussion answers this question based on an analysis of preconstitutional practice, records from the Constitutional Convention and ratification debates, and official practice during the Washington Administration. These sources generally suggest that the Framers understood Article II to allow subsovereign diplomacy by Congress and its members.

1. Concerns About Institutional Capacity

Practical considerations animated the Framers' approach to allocating diplomacy power. Records from the Constitutional Convention and state ratification debates document that the Framers generally opposed the idea of granting sovereign communicative powers to Congress on the view that Congress's institutional features would render it incapable of conducting foreign relations. This view rested heavily on the states' experience under the Articles of Confederation, which had assigned legislative and executive functions--including the conduct of diplomacy--to Congress. (181) Originally, the Congress of the Confederation appointed diplomats and chose the locations and durations of their service. (182) It received ambassadors from overseas. (183) It instructed diplomats on the actions and policies they were to pursue, (184) dispatched official correspondence to foreign ministers and sovereigns, (185) and received correspondence from the same. (186) Individual delegates to Congress also communicated with foreign officials. (187)

Simply put, this arrangement proved unworkable. For one, it caused significant delays. Internal political divisions, quorum rules, lengthy recesses, and delegates' preoccupations with other responsibilities frequently slowed or prevented altogether the transmission of time-sensitive diplomatic instructions and responses. (188) Delays in turn complicated foreign relations. (189) Another issue was Congress's inability to maintain secrecy. Legislative control often necessitated the exposure of sensitive information to the delegates, but with roughly fifty delegates (190) and their accompanying differences of opinion, leaks were a problem. (191) In April 1787, just a few weeks before the Constitutional Convention, John Jay lamented to Thomas Jefferson that Congress's lack of secrecy imposed "a great restraint" on the efforts of American diplomats to collect intelligence abroad. (192)

Those who drafted the Constitution and debated its ratification appear to have been aware of these difficulties. As early as 1776, Benjamin Franklin had expressed a belief that large legislative bodies were unable to maintain secrecy. (193) The Congress of the Confederation created the Department of Foreign Affairs in 1781 for the purpose of providing a "remedy against the fluctuation, the delay and indecision" that afflicted American foreign relations under the Second Continental Congress. (194) And over two-thirds of those who attended the Constitutional Convention had been either diplomats overseas or delegates to the Congress or one of its predecessors. (195) In those roles, they witnessed firsthand the complications of legislative management.

Evidence from the Constitutional Convention suggests, moreover, that the experience under the Articles influenced the Constitution's drafting. Notably, no delegate argued that Congress as a whole, or the House in particular, should be responsible for communicating with foreign governments, even though congressional control had been the longstanding arrangement up to that point. The delegates overwhelmingly opposed House involvement even in ratifying treaties on the view that its members would, like delegates to the Congress of the Confederation, have a hard time maintaining secrecy. (196) The story is more complicated for the Senate but is ultimately consistent: For much of the Convention, a number of delegates advocated that the Senate hold primary authority to conduct foreign relations. (197) In the end, however, the drafters shifted to the executive the clauses on which the Senate's diplomacy power would have relied, (198) and after that shift, no one suggested that the Senate would retain any sovereign communicative powers.

Evidence from the ratification debates is similar. In The Federalist, for example, Alexander Hamilton expanded the practical critique of legislative control: entrusting the Senate with treaty negotiations "would have been to relinquish the benefits of the constitutional agency of the President in the conduct of foreign negotiations," for "the ministerial servant of the Senate could not be expected to enjoy the confidence and respect of foreign powers in the same degree with the constitutional representative of the nation, and, of course, would not be able to act with an equal degree of weight or efficacy." (199) House participation would also have been problematic:

   The fluctuating and, taking its future increase into the account,
   the multitudinous composition of that body, forbid us to expect in
   it those qualities which are essential to the proper execution of
   such a trust. Accurate and comprehensive knowledge of foreign
   politics; a steady and systematic adherence to the same views; a
   nice and uniform sensibility to national character; decision,
   secrecy, and dispatch, are imcompatible with the genius of a body
   so variable and so numerous. (200)


Statements suggesting Senate involvement in international negotiations were not entirely absent, (201) but a clear majority of those with recorded statements on the issue shared Hamilton's views. (202)

This evidence aligns with the text of Article II insofar as it illuminates the rationale for allocating sovereign diplomacy power to the president. But the harder question is whether the evidence also demonstrates an original understanding against subsovereign diplomacy by Congress. Because no one directly addressed the issue at the Constitutional Convention or ratification debates, only inferences are possible, and the strength of the inference against legislative diplomacy will depend on the extent to which subsovereign communications by Congress give rise to the practical problems the Framers sought to avoid. If the communications are generally unproblematic, then there is less reason to believe that they would have troubled the Framers, and the originalist argument for prohibiting such communications becomes weaker.

Consider, then, the original practical concerns. The concern about speed and secrecy was that the size of a deliberative body corresponds negatively with its ability to decide quickly on proposed courses of action and to maintain the secrecy of sensitive information--more participants would cause more delays and increase the risk of leaks. (203) On the issue of respect, the concern was that a diplomatic agent of Congress would fail to garner the esteem of foreign counterparts because he would lack the stature of a head of state, such as a king or president, and that the agent might, therefore, be less effective in promoting U.S. interests abroad. (204) The interest-based concerns, in turn, reflected an understanding of the unique incentives the Constitution would impose on federal legislators. In establishing district- and state-based elections, Article I would give members of the House and Senate incentives to pursue the parochial interests of their constituents rather than those of the country as a whole and thus create a risk of conflicting communications among members whose constituents had divergent positions on foreign affairs. (205) And for members of the House, constitutionally mandated term limits would provide a strong incentive to seek short-term results even when long-term solutions might be preferable. (206) Those limits would also make it difficult to acquire an adequate knowledge of foreign affairs. (207)

Both the risk and magnitude of these problems are diminished, however, if Congress or its members conduct diplomacy only on their own behalf. Delays in legislative communications are far less problematic if the president alone negotiates treaties and otherwise transacts with foreign governments, leaving to Congress the business of communication for the purpose of investigating or lobbying, as documented in the contemporary evidence. (208) The same is true of leaks: because subsovereign communications are nontransactional and often concern issues that do not rise to the level of national importance, the harm of disclosing transmitted information will tend to be more limited. Further, lack of respect among foreign governments for agents of Congress is not a problem as long as the Constitution gives sovereign diplomacy power to a singular head of state, who can use the stature of his office effectively to pursue U.S. interests abroad. Similarly, parochial and short-term interests are less problematic if legislators cannot act on them in treaty negotiations or other international transactions.

In short, legislative diplomacy generally should not generate the practical problems that concerned the Framers as long as the executive alone holds the power to speak for the nation as a whole. This is not to say that subsovereign diplomacy will be entirely unproblematic. Delays, leaks, special interests, and lack of expertise might complicate congressional relations with foreign governments in a way that adversely affects national interests. But those problems are less significant if Congress does not exercise exclusive or primary power in this domain. The upshot is that the pragmatic concerns documented in the historical sources do not necessarily warrant the conclusion that the Framers would have opposed subsovereign congressional communication with foreign governments; if the Framers simultaneously accepted that practice and rejected sovereign diplomacy by Congress, they would not have acted unreasonably.

2. Practice of Members of Congress

Early practice confirms an original understanding that Article II does not preclude individual legislators from communicating with foreign governments. Direct communication in fact occurred throughout the Washington Administration. On some occasions, members of the first Congress corresponded about entirely private matters. (209) On others, they attended dinners and extravagant balls held by the French, Spanish, and Dutch ministers to the United States. (210) And on invitation, resident foreign ministers attended sessions of Congress to observe the debates. (211) Inevitably, some of these contacts generated discussions about official business. For example, in 1789, at least six different members of the first Congress conversed about legislation and foreign policy with George Beckwith, a senior intelligence officer in the English army and unofficial diplomat to the United States. (212) In one letter to Don Diego de Gardoqui, the former Spanish charge d'affaires and soon-to-be finance minister, Senator Pierce Butler encouraged the Spanish government to send a permanent diplomatic representative to the United States. (213) In a letter to Antoine de la Forest, the acting head of the French legation in the United States, Senator Butler recommended that the French government purchase naval supplies from an American businessman named George Hooper. (214) In 1795 and 1796, Pierre-Auguste Adet, the French ambassador to the United States at the time, worked extensively with Republicans in Congress to secure American support for France and to prevent the United States from adopting Jay's Treaty. (215) Other French officials did the same. (216) Moreover, I came across no evidence that the Washington Administration objected to these practices or that members of the House and Senate understood the contacts as a violation of the separation of powers. Members of other early Congresses continued the practice. (217)

The only potentially contrary evidence concerns the Logan Act, which, as explained above, Congress passed in 1799 to provide for criminal penalties against "any" U.S. citizen who, without the permission or authority of the federal government, carries on "any verbal or written correspondence or intercourse with any foreign government, or any officer or agent thereof' with the intent to affect U.S. foreign relations. (218) The purpose of the Act was to prevent the "usurpation of executive authority." (219) Moreover, the drafters intended for the Act to apply to legislators as well as private citizens: the reference to "any" U.S. citizen plainly encompasses members of the House and Senate, and during the debates on enactment, legislators who addressed the issue uniformly suggested that the Act's prohibition could apply to them. (220) Combining these observations, one might conclude that a majority of the law's supporters viewed even individual legislative communications as usurping Article II power.

This argument has a few significant weaknesses, however. First, it is problematic to rely on the actions of the fifth Congress as evidence of original meaning. It convened in 1797--over a decade after the Constitution's ratification; (221) it featured highly partisan debates between Federalists and Anti-Federalists and passed the controversial Mien and Sedition Acts; (222) and those who participated in drafting and ratifying the Constitution were by that time only a small minority of the membership. (223) Second, the Logan Act's legislative history suggests that the drafters were primarily concerned about the prospect of individuals attempting to negotiate solutions to international disputes involving the United States--acts that would plainly .Call within the scope of the executive power to speak on behalf of the nation. A majority of those who addressed the issue made statements to this effect. (224) Representative Samuel Dana, one of the legislation's supporters, explained that it was "not intended ... to provide against all correspondence with foreign Governments, but against such only as ought to be carried on by the Executive." (225) The recorded debates provide no evidence that the drafters aimed to prevent U.S. citizens, including legislators, from corresponding with foreign governments in ways that did not amount to international negotiations. Finally, the executive has never used the Logan Act to prosecute a federal legislator, despite several opportunities to do so. (226)

3. Practice of Congress

Early practice also confirms that Article II permits indirect, subsovereign communication between Congress and foreign governments. For example, in March 1792, the president provided Congress a letter in which Louis XVI announced his acceptance of the French Constitution of 1791. (227) In response, the House passed, by a margin of fifty to two, a resolution requesting that the president's answer to the king include an "express[ion of] the sincere participation of the House in the interests of the French Nation, on this great and important event." (228) A similar resolution from the Senate requested that the president "make known to the King of the French the satisfaction with which the Senate of the United States has received the official communication of his acceptance of a constitution." (229) On Jefferson's approval, (230) President Washington's response to the king enclosed both resolutions. (231)

A second example is from 1794, when the vice president provided to Congress a letter in which Maximilien de Robespierre and other members of the French Committee of Public Safety reported a series of republican military victories and expressed a desire for close relations with the United States. (232) The Senate voted against a proposed resolution that would have requested that the president answer "on behalf of the United States, in such manner as shall manifest their sincere friendship and good will for the French Republic," but then overwhelmingly approved an amended resolution that was different in only one respect: it requested that the president communicate sentiments "on behalf of the Senate of the United States" rather than the United States itself. (233) The House of Representatives passed a counterpart resolution containing a similar request to communicate a message "on behalf of th[e] House." (234) Once again the Washington Administration cooperated: Secretary of State Edmund Randolph transmitted the resolutions to James Monroe, the U.S. minister to France at the time, who mentioned them in an address to the French National Convention and provided copies to French officials. (235)

A third example, from 1796, involved the most extensive recorded debate on legislative diplomacy's constitutionality, but its lessons are unclear. After receiving Monroe's address in 1794, the French issued a response and had their ambassador make an official presentation of the French flag to Washington. (236) Washington, in turn, informed Congress of these events and explained that he had issued an official reply. (237) Some senators felt that the Senate should issue its own separate reply and proposed a resolution that the president "be requested to assure that magnanimous nation [France], through the proper organ, that the Senate unite with [the president] in all the feelings expressed to the Minister of France, on the presentation of the Colors of his Nation." (238) Unlike the earlier resolutions, however, this one failed--by a margin of sixteen to eight. (239) Some objected that the communication was unnecessary because Washington had already answered on behalf of the nation. (240) In addition, Senator Oliver Ellsworth argued against the resolution because "[n]othing ... could be found in the Constitution to authorize either branch of the Legislature to keep up any kind of correspondence with a foreign nation." (241) It is unclear whether anyone other than Ellsworth voted against the resolution on this basis. It is clear, however, that a majority of those who addressed the constitutional question found the resolution to be unobjectionable and consistent

with prior practice, given that it did not purport to represent the sentiments of the United States. Senators Pierce Butler, Aaron Burr, and Littleton Waller Tazewell disagreed with Ellsworth on this basis. (242)

Whether Article II prohibits direct communication by Congress is a harder question. The House and Senate relied on the Washington Administration to transmit their messages to France in both 1792 and 1794, (243) among other occasions. (244) Jefferson, moreover, clearly believed that Congress could correspond only through the executive branch. (245) One might reasonably view this evidence as demonstrating an executive monopoly on direct, institutional communication. (246) It is, however, by no means conclusive. First, it is not clear that early legislators shared Jefferson's view. Given the difficulty of international communication at the time, it seems just as plausible that Congress relied on the executive's established channels out of convenience and that the House and Senate resolutions requested executive assistance due to the absence of an Article II obligation to transmit rather than the presence of an Article II monopoly on direct contact. Second, as demonstrated above, individual members of Congress often discussed official business with representatives of foreign states, (247) and the Washington Administration appears never to have objected. That practice suggests an understanding that Article II does not establish an executive monopoly over direct communication. While it is conceivable that Article II simultaneously permits direct contacts by individual legislators and prohibits those by Congress as a whole, the rationale for that distinction is uncertain, particularly if the communications are substantively identical.

In summary, given the textual and historical evidence discussed so far, the best conclusion is that Article II definitely leaves room for individual members of Congress to conduct subsovereign diplomacy; definitely leaves room for Congress itself to conduct subsovereign diplomacy through the executive branch; and possibly leaves room for Congress to conduct subsovereign diplomacy without executive intermediation, depending on one's preferred interpretive framework and reading of the available historical evidence. Under the Discrete Powers Thesis, the absence of a courier or transmittal power in Sections 2 and 3 demonstrates that Article II leaves room for direct communications by Congress. The Vesting Clause Thesis, by contrast, is more likely to rely heavily on statements from Jefferson to contend that Section 1 gives the president all power over direct, official communication with foreign governments. Those who accept this latter reading must in turn either conclude that Congress has systematically violated the separation of powers by regularly interfacing directly with foreign officials or adopt a functionalism that justifies Congress's departure from the original meaning of Article II, Section 1 on the basis of longstanding official custom. (248) Given the evidence collected in Part I of this Article, the custom-based argument seems like a good one, (249) but it is not clear that adherents of the Vesting Clause Thesis are willing to make it, given that doing so would render practically irrelevant the evidence of original meaning on which their interpretation relies.

C. Executive Delegation

In addition to not prohibiting subsovereign communications by Congress and its members, Article II leaves room for legislative diplomacy if it empowers the president to delegate executive power to members of the House and Senate so that they can act on his behalf. Delegation could explain, for example, the practice of CODEL members purporting to speak for the United States, such as when Representative John Conyers promised the Haitian government that "the U.S. would continue to support Haiti" with foreign aid (250) and when then-Senator Kerry traveled to Afghanistan and Pakistan to "conduct[] a series of quiet missions on behalf of the president." (251) If premised on delegation and delegation is permissible, these kinds of acts rely on, rather than usurp, Article II power.

Executive delegation is an underexplored topic that could easily warrant a separate article. (252) The canonical nondelegation doctrine focuses on inter-branch transfers of legislative power, deeming invalid any statute that fails to provide the transferee with an "intelligible principle" to guide the exercise of statutory authority. (253) But executive delegation raises the question of whether there is a converse limitation on executive transfers of Article II power to members of Congress. As a result, it is not clear that the standard arguments about the established doctrine carry much weight. Given the volume and complexity of those arguments, I will not attempt a definitive resolution of the converse practice here and will instead offer only three tentative observations.

First, the textual argument for executive delegation seems unimpressive. Article II does not explicitly address whether the president can delegate any of the power vested in him to others. (254) There is certainly no express prohibition to that effect. Nor does the mere vesting of power logically require a prohibition on transfer; it is conceivable that vesting simply sets an enumerated power's default institutional location. (255) In this way, Article II is functionally identical to Article I, which vests "all legislative Powers [t]herein granted" to Congress without addressing whether those powers are horizontally delegable. (256) But finding an affirmative basis for the delegation power is difficult. The power to delegate downward, within the executive branch, is dearly implied: Article II, Section 1 vests executive power only in the president, but Section 2 establishes "executive Departments" headed by "principal Officer[s]." (257) The only way to reconcile the president's monopoly with the presence of other executive officers is to conclude that the president has the ability to delegate his powers to them. (258) It is challenging, however, to find even an implied basis for horizontal delegations to federal legislators. The best candidates seem to be the Vesting Clause and the Take Care Clause. One could read the former as authorizing delegation if the term "executive power" somehow includes broad authority to deputize agents for the execution of other Article II powers. The latter might authorize the practice if necessary to fulfill the president's law-enforcement obligations. But nothing in Article II clearly permits delegation.

Second, although executive delegation does not draw any clear support from Supreme Court precedent, it is not irreconcilable with the Court's pronouncements on the unitary executive. Scattered dicta suggest that unity is important to preserve accountability and ensure the effective conduct of foreign relations, (259) but also leave open the possibility that the president can make delegations that preserve his "ultimate responsibility" and honor an "active obligation to supervise." (260) To the extent that the Court has invalidated the exercise of Article II power outside the executive branch, it has been where Congress attempted to transfer some portion of the power to individuals over whom the president could not exercise effective control. (261) Those precedents would seem to permit horizontal delegation where the president retains control over the content of the diplomatic communication.

Finally, while the textual foundation is at best uncertain, official practice strongly suggests that horizontal executive delegation is permissible. Contrary perceptions notwithstanding, (262) historical examples of transfers of executive power to nonexecutive federal officers are numerous, even outside the context of legislative diplomacy. (263) President Woodrow Wilson selected Justice Joseph Rucker Lamar to lead an American delegation tasked with negotiating an end to a diplomatic crisis with Mexico in 1914. (264) President Franklin D. Roosevelt appointed Justice Owen Roberts to lead a commission charged with investigating and reporting on the attack on Pearl Harbor. (265) And President Harry S. Truman designated Justice Robert H. Jackson as the chief prosecutor for the United States at the Nuremberg trials, (266) among other examples. (267) President George H.W. Bush opposed a statute that enlisted federal legislators in diplomacy at the Organization for Security and Cooperation in Europe, but only because mandating the legislators' inclusion in U.S. delegations interfered with the president's prerogative to choose the agents of official diplomacy, not because the involvement of legislators was unconstitutional per se. (268) Moreover, transfers of Article II power to private entities are not uncommon. (269) To name just one example, it is well known that the U.S. armed forces contract with private security firms to carry out certain quasi-military functions. (270) Any argument against executive delegation must be able to explain why these transfers are permissible while transfers to members of Congress are not. Furthermore, it is well known that the traditional nondelegation doctrine has ceased to restrain statutory grants of legislative power to the executive and judiciary. (271) Despite various opportunities to invalidate delegations of this variety, the Supreme Court has not employed the doctrine to strike down a single statute since 1935. (272) Anyone who accepts the constitutionality of even limited legislative delegation (273) must either take the same position on executive delegation or identify a unique basis for its prohibition. In summary, judicial precedent and official practice suggest that executive delegation is permissible as long as the president retains control over both the content of the communication and the delivery agent.

III. LEGISLATIVE DIPLOMACY POWERS

Having analyzed the contours of executive power, we can begin to draw conclusions about a possible legislative counterpart. Article II of the Constitution prohibits legislators and Congress only from executing a variety of diplomatic functions on behalf of the United States and, if one accepts the Vesting Clause Thesis, bars Congress from directly interfacing with foreign governments. It does not necessarily follow, however, that legislative diplomacy is to any degree permissible. What remains missing is a positive theory of constitutionality under Article I. In this Part, I develop two divergent approaches: One is that the diplomacy powers of Congress must have an affirmative basis in Article I in addition to honoring the limits imposed by Article II. The other is that legislative diplomacy does not need an affirmative basis in Article I and is constitutional as long as it does not violate Article II. The choice between these depends on one's view about the applicability of the doctrine of enumerated powers. Section III.A evaluates legislative diplomacy on the assumption that the doctrine applies and concludes that Article I permits Congress only to make international communications in the form of a war declaration or for the purpose of investigating extraterritorial facts. Section III.B explains why the enumerated powers doctrine may not apply. Section III.C in turn operates on the assumption that the doctrine is inapplicable and suggests that subsovereign diplomacy by Congress is constitutional regardless of communicative purpose, given substantial evidence of longstanding legislative practice and executive acquiescence.

A. Theories Based on the Enumerated Powers Doctrine

The doctrine of enumerated powers posits that the words and implications of the Constitution's written text are the exclusive foundation for federal power; to enumerate is both to create and confine the power of each branch. (274) Thus, claims to power not fundamentally based in the text are illegitimate. This is the basic premise of most constitutional interpretation. To the extent that the doctrine applies to legislative diplomacy, an Article I basis is required, and the range of constitutionally permissible communications is limited: Congress can declare war and investigate extraterritorial facts, but it cannot engage in noninvestigatory communications. Congress cannot, for example, conduct interparliamentary exchanges to educate and train foreign legislative bodies or lobby foreign governments to engage in conduct favorable to U.S. interests. Nor can CODEL members lobby on Congress's behalf. These conclusions follow from an analysis of the express and implied powers of Article I.

1. Express Power: War Declarations

In one sense, the search for Article I power encounters a unique challenge. Unlike the Article II Vesting Clause, which might itself provide the executive with a range of otherwise unenumerated powers, (275) the Article I Vesting Clause suggests that Congress possesses only those powers enumerated elsewhere in Article I. (276) As a result, Congress as an institution cannot communicate with foreign nations unless there is an express diplomacy power or an enumerated power of another kind that implies the power to communicate with foreign governments.

Express power comes in the form of the Declare War Clause, which gives Congress control over a specific form of international communication on behalf of the United States. While scholars disagree about some aspects of the Clause, (277) all agree that it at least gives Congress the power to issue declarations that formally create a state of war. (278) These declarations are diplomatic communications in the sense that they are designed for an international audience--in particular, the state or states with which the United States will be at war. The power to declare war is thus analogous to the president's power to "make Treaties" and "receive Ambassadors"; (279) the exercise of any of these powers entails communicating to a foreign government. The Declare War Clause is thus an exception to the executive's power to communicate on behalf of the United States and supports the view that Article II diplomacy power is less than plenary. The power to declare war, however, cannot explain the breadth of the contemporary practice, and Article I is otherwise devoid of express communicative powers. Thus, if it exists, a broader power to engage in diplomacy must be implied.

2. Implied Power: Extraterritorial Investigations

The authority for subsovereign diplomacy comes primarily from Congress's implied power of investigation. Although not specific to legislative diplomacy or investigations concerning foreign affairs, Supreme Court precedent establishes that Congress has broad power to investigate in furtherance of enumerated powers. In McGrain v. Daugherty, a widely cited case addressing the scope of the congressional subpoena power, the Court explained that "the two houses of Congress ... possess not only such powers as are expressly granted to them by the Constitution, but such auxiliary powers as are necessary and appropriate to make the express powers effective." (280) The Court explained that these auxiliary powers include the "power of inquiry" because "[a] legislative body cannot legislate wisely or effectively in the absence of information respecting the conditions which the legislation is intended to affect or change." (281) In Watkins v. United States, the Court further explained that

   [t]he power of the Congress to conduct investigations is inherent
   in the legislative process. That power is broad. It encompasses
   inquiries concerning the administration of existing laws as well as
   proposed or possibly needed statutes. It includes surveys of
   defects in our social, economic or political system for the purpose
   of enabling the Congress to remedy them. It comprehends probes into
   departments of the Federal Government to expose corruption,
   inefficiency or waste. (282)


There is no reason to limit these instructions to domestic investigations not involving foreign governments; the Court's only articulated Article I limit on the investigative power is that its use must be "related to, and in furtherance of, a legitimate task of the Congress. (283)

The Foreign Emoluments Clause might corroborate this reading of the Court's precedent by providing that "no Person holding any Office of Profit or Trust under them, shall, without the Consent of the Congress, accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State." (284) The Framers adopted this prohibition as a means of preventing corruption--" [g]ifts of the sort referred to in the clause were.., the currency of diplomacy at the time" of the Founding and were viewed as a source of undue foreign influence. (285) Although some scholars debate the point, assume for a moment that the prohibition applies to members of the House and Senate, such that these individuals cannot accept foreign gifts without the consent of Congress. (286) In that event, the prohibition would seem to have implications for legislative diplomacy. The existence of the prohibition would show that the Framers anticipated contacts between federal legislators and foreign officials, and yet the prohibition's scope would show that the Framers cared only to prohibit a small category of those contacts--that is, those consisting of a legislator's receipt of an unauthorized foreign gift. In theory, the Framers could have opted for this narrow prohibition on either of two rationales. One is that they understood Article II as already barring legislative communications with foreign governments by establishing an executive monopoly over diplomatic contacts, but they chose to render explicit, for the purpose of fighting corruption, only one of the implications of that monopoly. The other possibility is that the Framers understood Article II as not prohibiting all legislative diplomacy and viewed any form of that practice other than the receipt of gifts as insufficiently problematic to warrant Article I treatment. This latter option seems more plausible. It would comport with the circumscribed character of the Article II, Sections 2 and 3 powers, and it would avoid rendering the Foreign Emoluments Clause functionally superfluous as a clause that prohibits actions that Article II virtually makes impossible on its own. In short, the Clause might support legislative diplomacy as an exercise of implied investigative power by implying that contacts between legislators and foreign officials are generally permissible.

Moreover, legislative diplomacy may often be necessary to render Congress's implied investigatory powers effective. Congress's ability to develop effective legislation depends heavily on its capacity to collect information about the underlying problems that the legislation seeks to address. To craft effective legislation for funding public transportation, for example, Congress may first need to identify where improvements are needed, how much they would cost, and how long they would take to complete, among other considerations. For effective legislation on water pollution, Congress may need to understand the sources of pollution and the likely effects of various proposed remedies. Generally speaking, legislators can complete the necessary fact-finding by using investigative tools such as witness and document subpoenas, staff depositions, and committee hearings. (287)

The tools within this kit, however, are largely unavailable when it comes to facts whose discovery requires extraterritorial investigation. Imagine, for example, that in reliance on the Article I power to regulate foreign commerce, (288) certain senators begin to draft a bill that would impose economic sanctions on the government of Sudan. To design the sanctions, the senators and their staff will need access to a variety of information, possibly including who does business with Sudan, the degree of hardship that various types of sanctions might produce, how Sudan might respond, and whether allies might cooperate. The senators, however, will face unique challenges in discovering such facts: Due to sovereign equality, Congress cannot subpoena documents from Sudan or other relevant foreign sovereigns. (289) Due to limits on extraterritorial jurisdiction, Congress cannot subpoena testimony from aliens who reside overseas and have no contacts with the United States. (290) And due to the state of U.S.-Sudan relations, the Sudanese government would likely refuse to cooperate in a formal investigation even if legal doctrines presented no hurdle. (291) Congress could of course pass the sanctions bill without using these sources, but doing so might require guesswork that undermines the quality of the legislation. Thus, the informed, effective use of the Article I power to regulate foreign commerce might demand additional means of investigation.

Perhaps the most important practical argument for legislative diplomacy is that it can fill that demand. By communicating with relevant foreign governments, legislators may acquire information that is otherwise unavailable but necessary to draft effective legislation. Such efforts may at times fail, but the relative informality and typically confidential nature of the communications seem to encourage cooperation in ways that formal, public investigations probably cannot. Indeed, WikiLeaks suggests that legislators are frequently successful in using their communications with foreign governments to gather information that may be useful to the legislative process. (292)

The example of Sudan shows how legislative diplomacy may be necessary for the effective use of the foreign commerce power, but its logic also extends to other Article I powers. Because the powers to "punish ... Offences against the Law of Nations" (293) and approve executive agreements (294) have obvious international dimensions, Congress's ability to exercise those powers effectively may also frequently depend on extraterritorial fact-finding. Congress may need to communicate with foreign governments to settle on an appropriate punishment for a violation of international criminal law, for example, or to determine whether to approve a proposed international agreement. Similarly, Congress may need to confer with foreign governments to determine how to exercise its appropriations power. (295) And there is no reason to limit the diplomacy power even to these domains--legislative diplomacy may be constitutional to the extent that its capacity to aid fact finding renders it necessary for the effective exercise of any Article I power. This is particularly true if one interprets Article II in accordance with the Discrete Powers Thesis, which relies on similar logic in concluding that Sections 2 and 3 establish an executive power with broad functional contours.

One might argue in response that legislative diplomacy is actually unnecessary as a fact-finding tool. The State Department and executive intelligence agencies collect far more information than CODELs ever could. Thus, rather than confer directly with foreign governments, Congress could simply rely on the executive as its source of information from abroad. (296) Such an arrangement would leave Congress with the power to investigate domestic facts and the president with the power to investigate those that are foreign.

There are several problems with this position, however. First, there is reason to doubt that executive agencies can always provide the information that legislators seek. By using the prestige of their position as elected federal officials, CODEL members may be able to acquire information that embassy staff cannot. It is apparently in part for this reason that inquisitive embassy officials often attend CODEL meetings with foreign leaders who are otherwise hard to reach. (297) Direct interaction with foreign officials and observation of foreign conditions may illuminate details that a third-party report cannot. As long as legislative diplomacy can aid fact-finding in unique ways, there is a policy argument for Congress not to rely entirely on the executive. Second, requiring dependence on the executive for information about foreign affairs could make even the drafting of foreign affairs legislation dependent on executive cooperation that may not be forthcoming. (298) That arrangement would interfere with the allocation of legislative power to Congress. Finally, the Supreme Court precedent discussed above does not suggest any territorial limits to Congress's investigatory powers. (299)

B. Limits on the Enumerated Powers Doctrine

While the implications of the enumerated powers doctrine are fairly dear, there is reason to question whether the doctrine applies at all. First, it does not apply even on its own terms to individual communications that lack an institutional signature--essentially anything said by NODEL members. Article I is generally agnostic to the conduct of individual legislators; it does not give them any government powers. (300) Section 1 vests "all legislative Powers [t]herein granted" in "a Congress of the United States," rather than in each individual comprising it. (301) As a result, no single legislator can pass legislation, impeach a federal officer, provide advice and consent to a treaty, or confirm a nominee for executive or judicial office. (302) And because individual legislators are in a sense powerless, Article I is generally unconcerned with imposing textual limits on their conduct. (303) This is why no one worries about the Article I basis for legislator op-eds and constituent services. It is also why purely individual legislative diplomacy is permissible as long as it does not violate Article II.

Of course, this point explains the basis for only some communications. As explained earlier, Congress as a body funds much of its members' diplomacy by authorizing a permanent appropriation for official foreign travel, (304) and it has passed numerous statutes establishing official legislative contacts with other governments. (305) CODEL travel happens only with the authorization of congressional leadership. (306) Congress has developed a practice of receiving foreign heads of state for official addresses. (307) And CODEL members on occasion use their meetings with foreign officials to communicate on behalf of Congress. (308) Many of these activities involve acts of Congress itself. Others suggest that legislative diplomacy may rely on an internal delegation of Congress's institutional powers to individual members. The doctrine of enumerated powers would still demand an Article I basis to that extent.

But there are also reasons to question whether the doctrine applies even to legislative diplomacy that is institutional in character. First, functionalist arguments that emphasize nontextual factors are common in Supreme Court precedent and other analyses on foreign affairs powers. Among the most influential of these is Justice Frankfurter's Youngstown concurrence, which explained that "a systematic, unbroken, executive practice, long pursued to the knowledge of the Congress and never before questioned, engaged in by Presidents who have also sworn to uphold the Constitution ... may be treated as a gloss on 'executive Power' vested in the President by [section] 1 of Art. II." (309) Subsequent cases have also adopted this view (310) and thus established that customary practice can resolve textual indeterminacy. Factors such as the consistency of the practice, the number of times the executive engaged in it, the period of time over which it was repeated, the number of presidents who participated, whether Congress had notice of its occurrence, and whether Congress acquiesced will influence whether a constitutional custom has formed. (311) A similar analysis might be instructive here as well, not because legislative diplomacy concerns legislative acquiescence to customary executive acts but because the practice raises converse questions about whether legislative custom and executive response can expand or contract the powers of Congress. The converse analysis would simply look for evidence that legislative diplomacy is a custom and affirm its constitutionality as long as the practice is customary and not clearly contrary to other sources of meaning. (312)

A second, independent reason to question the applicability of the doctrine of enumerated powers is the Supreme Court's famous Curtiss-Wright decision. (313) There, the Court addressed whether a joint resolution of Congress authorizing the president to decide whether to prohibit certain arms sales to Paraguay and Bolivia effected an invalid delegation of legislative power to the executive. (314) Upholding the delegation, the Court explained in dicta that the doctrine of enumerated powers applies only to powers that the colonies possessed on an individual basis prior to the Constitution's adoption. (315) Because no individual colony possessed "powers of external sovereignty," it followed that the doctrine did not apply to foreign affairs powers, which "would have vested in the federal government as necessary concomitants of nationality" even "if they had never been mentioned in the Constitution." (316) Foreign affairs powers thus have an extraconstitutional source--the national sovereignty of the United States as a "member of the family of nations." (317) Curtiss-Wright has plenty of critics, (318) but the Supreme Court arguably continues to endorse its reasoning today. (319) Under that reasoning, Congress might permissibly engage in subsovereign diplomacy even if there is no Article I basis for doing so, given that sovereignty empowers the United States to choose freely its mode of communication with foreign governments. If foreign affairs powers are generally extraconstitutional, then perhaps Congress, too, can claim diplomacy powers grounded in national sovereignty. In the next Section, I explain the logic of looking to custom or sovereignty to evaluate institutional diplomacy by Congress. I then argue that the practice would be constitutional under both frameworks.

C. Beyond Enumerated Powers

If legislative diplomacy is not limited by the text of Article I, then the practice is generally constitutional. Individual communications that lack an institutional signature are permissible as long as they comport with Article II. Institutional communications of an investigatory nature are permissible as an exercise of Congress's implied power to engage in extraterritorial investigations, and declarations of war are permissible under the Declare War Clause. (320) Any other institutional communications are in turn permissible if customary, as long as it is appropriate to treat official custom as a determinant of legislative power. Alternatively, other institutional communications may be permissible as an exercise of extraconstitutional power grounded in U.S. sovereignty, as long as there is a justification for allocating a portion of the sovereignty-based power of international diplomacy to Congress rather than the president.

Beginning with the converted Frankfurter framework, custom-based analyses of legislative power are not unprecedented. In Field v. Clark, for

example, the Court relied heavily on longstanding legislative custom in rejecting a nondelegation challenge to a statute that authorized the president to suspend free trade in certain products in retaliation for foreign tariffs on U.S. agricultural exports. (321) The Court explained that "the practical construction of the Constitution, as given by so many acts of Congress, and embracing almost the entire period of our national existence, should not be overruled, unless upon a conviction that such legislation was clearly incompatible with the supreme law of the land." (322) More recently, in Harndan v. Rumsfeld, the Court held that the system of military commissions established under President George W. Bush was invalid because it violated federal statutory provisions, the constitutionality of which relied heavily on longstanding practice. (323) Scholars have also employed functionalism in constructing arguments in favor of legislative power. (324)

Moreover, there is a good argument that the logic of functionalism applies more persuasively to analyses about the powers of Congress than those of the executive. A standard view holds that one branch's acquiescence to the official practice of the other informs constitutional meaning, either because it demonstrates an interbranch agreement about the practice's constitutionality or practical workability or because it is evidence that the acquiescing branch has waived its institutional prerogatives. (325) As Curtis Bradley and Trevor Morrison explained recently, that logic applies best to questions about executive acquiescence to congressional practice because the president encounters fewer structural impediments to protecting his constitutional prerogatives and has a greater political incentive to protect them. (326) For example, while Congress requires majorities in both houses to pass legislation, the president can often act unilaterally. And individual members of Congress have little incentive to expend resources protecting institutional powers that will not benefit them directly. (327) As a result, the absence of executive objection to legislative practice is generally a more reliable indication of agreement or waiver than the absence of congressional objection to executive practice. Moreover, there is analytical space for a functionalist resolution to the question about subsovereign, noninvestigatory legislative diplomacy because that practice does not dearly violate any textual commands from Articles I and II or their original meaning. (328)

Moving to Curtiss-Wright, even if one accepts the view that there are extraconstitutional foreign affairs powers, it does not necessarily follow that Congress gets to exercise them. In that decision, the Court asserted a robust vision of executive power, even quoting John Marshall's statement that the president is the "sole organ of the nation in its external relations, and its sole representative with foreign nations." (329) On this view, sovereignty confers extraconstitutional powers on the federal government, but most of them belong to the president. Moreover, because national sovereignty includes the power to decide the various means by which the government will interface with external actors, (330) the sovereignty-based powers of the president might conceivably include control over all diplomatic communications, subsovereign or otherwise. Curtiss-Wright may therefore require a justification for allocating extraconstitutional diplomacy power elsewhere, such as to Congress.

There is a plausible argument that legislative custom can provide the necessary justification here as well. First, while Curtiss-Wright supports a broad vision of executive power, it does not suggest that all extraconstitutional powers belong to the president. Even taking as doctrine John Marshall's statement that the president is the "sole organ of the nation in its external relations," (331) it does not follow that the decision prohibits Congress from relying on extraconstitutional power to engage in subsovereign diplomacy. Second, once one concludes that foreign affairs powers can be extraconstitutional, there is little to guide the analysis on whether any given power resides in Congress or in the president. Certainly the text ceases to be determinative. In that event, customary practice might be a necessary guide.

Assuming, therefore, that it is permissible to look to custom, either as a gloss on Article I or as an indicium of the allocation of extraconstitutional power, the strength of the argument in favor of noninvestigatory diplomacy by Congress hinges largely on the level of generality with which we frame the practice and the executive response. If we think about legislative diplomacy in general terms, treating all communications alike regardless of their content, then there are more data points from which to draw an inference of custom. The evidence discussed in Part I of this Article suggests that legislators from both chambers and various parties have frequently lobbied foreign officials since the Founding. (332) Moreover, as long as the evidence from 2009 is not aberrational, the executive has known of the practice and generally declined to object. (333) Presidents have backed all manner of legislative diplomacy--noninvestigatory acts included--by signing the legislation that has authorized it. (334) And the Defense and State Departments routinely facilitate the practice by providing logistical support. (335) Finally, the executive is plainly on notice that legislators lobby foreign governments, as embassy officials often accompany CODELs to meetings, and yet no one appears to object. (336) Noninvestigatory communications, therefore, have likely formed a gloss on legislative power that enables Congress to act beyond the limits suggested by a formalistic analysis of Article I text alone.

Greater scrutiny of contemporary practice, however, raises questions about the extent of the custom and executive support. For example, even if legislators have routinely lobbied foreign governments since the Founding, it is not clear that they have, in doing so, also established a more specific custom of speaking on behalf of the United States. Further historical research is needed to confirm the customary status of executive delegation. Likewise, not all acts of noninvestigatory diplomacy receive specific executive acquiescence. Sometimes the executive expressly disapproves, such as when Secretary Hillary Clinton opposed one CODEL's travel to Afghanistan after receiving objections from President Hamid Karzai. (337) In these cases, Congress's power may be no more than that granted by Article I and thus limited to investigatory communication.

CONCLUSION

For a long time, legislative diplomacy has been an enigma, both empirically and doctrinally. But WikiLeaks and other sources now make clear that the practice is an established means by which the United States engages with the world. This evidence raises important and previously overlooked questions about the separation of powers. I have argued that diplomacy attributable exclusively to individual members of Congress is constitutional as long as the practice honors the president's power to speak on behalf of the United States. But the analysis is more complicated where Congress itself is involved or where its members act as institutional agents. Here, one's view on constitutionality will hinge primarily on one's preexisting position regarding the role of the enumerated powers doctrine in foreign affairs. Those who adhere to the enumerated powers doctrine must conclude that Congress's diplomacy powers are limited to declaring war and communicating with foreign nations for investigative purposes, and must recognize that Congress frequently violates the separation of powers by engaging in activities such as lobbying foreign governments, holding interparliamentary exchanges, and speaking for the president. Those who reject the enumerated powers doctrine must in turn accept that legislative diplomacy is generally constitutional regardless of communicative purpose due to well-established custom.

These conclusions have a number of important implications for the theory and practice of U.S. foreign relations. Perhaps the most obvious is that expressions of the orthodox position on the separation of diplomacy powers are often imprecise and always incomplete. They are imprecise because they tend to overstate the president's power, which is exclusive only with respect to communications on behalf of the United States. And they are incomplete because they wholly neglect the power of Congress. If the orthodox model depicts the president as a monopolistic diplomat, theory and practice now support a model that is decentralized and pluralistic. By demonstrating as much, the analysis of legislative diplomacy bolsters preexisting critiques of the "one voice" metaphor in U.S. foreign relations law. (338)

This analysis also serves as a counterpoint to longstanding and widely held views about the balance of power between the president and Congress in foreign affairs. By all accounts, the president has steadily accrued power at the expense of Congress over the last several decades, to the point where he now dominates the field. (339) Explanations for this trend include Supreme Court decisions from the 1930s and 1940s, (340) executive initiative, and congressional acquiescence. (341) Such accounts, however, have overlooked legislative diplomacy and its contribution to Congress's side of the power scale. By participating directly in foreign relations, legislators have collected information on overseas developments directly from primary sources, pressed foreign governments to act in accordance with congressional preferences, and aired views that at times contradicted executive policy. These acts have reduced congressional dependence on executive fact-finding, amplified Congress's voice, and complicated the ability of the president to control the execution of U.S. foreign relations. Although the president still dominates, legislative diplomacy suggests that the narrative of overwhelming dominance is overstated.

Further, legislative diplomacy has implications for the doctrine of dormant foreign affairs preemption. At its most robust, the doctrine holds that the Constitution's allocation of powers to the federal government implicitly bars states and localities from taking actions with adverse foreign policy implications that are more than "incidental." (342) But because the doctrine restricts only nonfederal actors, members of the House and Senate can easily avoid its limits even while operating as de facto agents for state and local interests. The WikiLeaks cables demonstrate that legislators regularly operate in this fashion. (343) Thus, ironically, federal legislative diplomacy complicates federal exclusivity in foreign affairs; the practice shows that the current doctrine cannot achieve its purposes even if state and local governments fully honor its terms. When faced with a choice between honoring constituent preferences or federal policy, it is questionable that members of Congress will consistently choose the latter.

The horizontal dispersion of diplomatic activity also has practical benefits and drawbacks. In general, legislative diplomacy democratizes U.S. foreign relations, and its investigatory dimension helps Congress to develop effective legislative solutions to foreign policy problems. The proliferation of voices, however, may also complicate the management of relations with foreign governments by generating confusion about lines of authority and U.S. policy and by infusing into the process parochial, local interests that may conflict with national policy.

Finally, although legislative diplomacy is generally constitutional, participating members of the House and Senate must be cautious. Absent executive delegation, for example, CODEL members should honor Article II power by avoiding statements on behalf of the United States. Additionally, legislators should be aware of how their communications might undermine federal exclusivity in foreign affairs. Honoring the spirit of dormant foreign affairs preemption may require CODEL members to ensure that their communications on behalf of state or local interests do not conflict with federal policy in a way that harms U.S. interests. And legislators should be aware of how their communications might affect the president's ability to negotiate successfully with other governments. For example, all else being equal, legislative diplomacy will tend to strengthen the president's negotiating position anytime Congress communicates the same position to a foreign government by demonstrating a united front. Inversely, where Congress takes a position different than that of the president, legislative diplomacy will tend to weaken the president's hand by calling into question the justification for his position or his ability to deliver congressional cooperation. Of course, even absent legislative diplomacy, the president would typically have to negotiate in light of an anticipated congressional reaction to a proposed agreement. But the open line of communication between Congress and foreign governments makes it harder for the president to control strategic decisions about whether and when to reveal to negotiating parties information about Congress's views. CODEL members should pursue their various objectives in a way that is sensitive to these dynamics. Future analyses might explore these issues in more detail and thus facilitate a fuller understanding of legislative diplomacy's costs and benefits.

(1.) Louis HENKIN, FOREIGN AFFAIRS AND THE UNITED STATES CONSTITUTION 32 (2d ed. 1996).

(2.) Compare MICHAEL D. RAMSEY, THE CONSTITUTION'S TEXT IN FOREIGN AFFAIRS 51-52, 210 (2007), with ELMER PLISCHKE, CONDUCT OF AMERICAN DIPLOMACY 100 (1950), and QUINCY WRIGHT, THE CONTROL OF AMERICAN FOREIGN RELATIONS 360 (1922).

(3.) See, e.g., H. JEFFERSON POWELL, THE PRESIDENT'S AUTHORITY OVER FOREIGN AFFAIRS 145 (2002); RAMSEY, supra note 2, at 245; KENNETH W. THOMPSON, AMERICAN DIPLOMACY AND EMERGENT PATTERNS 120 (1962); Donald L. Robinson, Presidential Prerogative and the Spirit of American Constitutionalism, in THE CONSTITUTION AND THE CONDUCT OF AMERICAN FOREIGN POLICY 114, 118 (David Gray Adler & Larry N. George eds., 1996); Arthur Bestor, Respective Roles of Senate and President in the Making and Abrogation of Treaties--The Original Intent of the Framers of the Constitution Historically Examined, 55 WASH. L. REV. 1, 59-60 (1979); Oona A. Hathaway, Presidential Power over International Law: Restoring the Balance, 119 YALE L.J. 140, 206-07 (2009).

(4.) See, e.g., Curtis A. Bradley & Martin S. Flaherty, Executive Power Essentialism and Foreign Affairs, 102 MICH. L. REV. 545, 624 (2004); Louis Fisher, Commentary, Congressional Participation in the Treaty Process, 137 U. PA. L. REV. 1511, 1517-18 (1989).

(5.) Phillip R. Trimble, The President's Foreign Affairs Power, 83 AM. J. INT'L L. 750, 755 (1989).

(6.) EDWARD S. CORWIN ET AL., THE PRESIDENT 214 (5th rev. ed. 1984).

(7.) U.S. CONST. art. II.

(8.) See, e.g., DAVID C. HENDRICKSON, PEACE PACT 242-43 (2003); JACK N. RAKOVE, ORIGINAL MEANINGS 267 (1996); GRAHAM H. STUART, AMERICAN DIPLOMATIC AND CONSULAR PRACTICE 1, 4 (2d ed. 1952).

(9.) HENKIN, supra note 1, at 32.

(10.) See infra notes 129-136 and accompanying text (identifying federal statutes that provide for legislative diplomacy).

(11.) Infra notes 32, 46, 49-65 and accompanying text.

(12.) Infra notes 90-100, 126-136 and accompanying text.

(13.) See, e.g., Asad Discusses Iran and Gaza with CODEL Specter, WIKILEAKS (Jan. 4, 2009), http://wikileaks.org/cable/2009/01/09DAMASCUS3.html.

(14.) See 22 U.S.C. [section] 1754(b)(2) (2006) (requiring public reports on the costs and destinations of publicly funded foreign travel by members of Congress). In March 2011, Senator Claire McCaskill introduced a bill designed in part to enhance these reporting requirements. The bill was referred to the Senate Committee on Homeland Security and Government Affairs, but nothing has happened since. See Cleaning up Congress by Providing Accountability for Congressional Foreign Travel Act, S. 429, 112th Cong. (2011), available at http://www.govtrack.us/congress/bills/112/s429/text.

(15.) See Christian Stocker, Leak at WikiLeaks: A Dispatch Disaster in Six Acts, DER SPIEGEL (Sept. 1, 2011), http://www.spiegel.de/international/world/leak-at-wikileaks-a-dispatch- disaster-in-six-acts-a-783778.html (recounting the process by which the State Department cables became available to the public).

(16.) Infra notes 32-65 and accompanying text.

(17.) Cf. G.R. BERRIDGE & ALAN JAMES, A DICTIONARY OF DIPLOMACY 70 (2d ed. 2003) ("Diplomacy is ... the principal means by which states communicate with each other, enabling them to have regular and complex relations. It is the communications system of the international society."); Elmer Plischke, Diplomacy--Search for Its Meaning, in MODERN DIPLOMACY 27, 31-32 (Elmer Plischke ed., 1979) (explaining that one comparatively narrow definition of "diplomacy" embraces "official communications among governments and nations").

(18.) Infra Sections II.B.2-3.

(19.) Infra Section II.B.2.

(20.) Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579, 613 (1952) (Frankfurter, J., concurring); see also id. at 635-38 (Jackson, J., concurring).

(21.) United States v. Curtiss-Wright Exp. Corp., 299 U.S. 304 (1936).

(22.) Infra Section II.B.2-3.

(23.) See infra Section I.A.1.a. The distinction is that U.S. government funds pay for CODELs, while funds from private entities such as nonprofit organizations pay for NODELs. Telephone interview with Matthew A. Reynolds, Former Assistant Secretary of State for Legislative Affairs (Oct. 24, 2012). As assistant secretary of state for legislative affairs, Reynolds and his predecessor, Jeffrey Bergner, were in charge of the Bureau of Legislative Affairs, which is responsible for facilitating congressional foreign travel. See infra note 25.

(24.) Infra Section I.A.2.

(25.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, Former Assistant Secretary of State for Legislative Affairs (June 13, 2012).

(26.) See discussion infra Section I.A.1.

(27.) E.g., sources cited infra notes 29-31.

(28.) See Kevin Poulsen & Kim Zetter, U.S. Intelligence Analyst Arrested in Wikileaks Video Probe, WIRED (June 6, 2010, 9:31 PM), http://www.wired.com/threatlevel/2010/06/leak/.

(29.) See, e.g., 156 CONG. REC. H2495-96 (daily ed. Apr. 13, 2010); 156 CONG. REC. H1394-95 (daily ed. Mar. 12, 2010); 156 CONG. REC. H963-70 (daily ed. Feb. 26, 2010); 156 CONG. REC. S665-73 (daily ed. Feb. 22, 2010); 156 CONG. REC. H466-68 (daily ed. Feb. 2, 2010); 156 CONG. REC. H382-83 (daily ed. Jan. 26, 2010); 156 CONG. REC. H30 (daily ed. Jan. 12, 2010); 155 CONG. REC. H15,495-96 (daily ed. Dec. 16, 2009); 155 CONG. REC. H13,341-50 (daily ed. Nov. 19, 2009); 155 CONG. REC. H12,583-84 (daily ed. Nov. 6, 2009); 155 CONG. REC. S11,121-29 (daily ed. Nov. 4, 2009); 155 CONG. REC. H12,041-42 (daily ed. Oct. 28, 2009); 155 CONG. REC. H11,455 (daily ed. Oct. 15, 2009); 155 CONG. REC. H11,169-72 (daily ed. Oct. 9, 2009); 155 CONG. REC. H9996-97 (daily ed. Sept. 25, 2009); 155 CONG. REC. H9653-67 (daily ed. Sept. 16, 2009); 155 CONG. REC. H9333-34 (daily ed. Sept. 8, 2009); 155 CONG. REC. S9048-58 (daily ed. Aug. 6, 2009); 155 CONG. REC. H8022-23 (daily ed. July 13, 2009); 155 CONG. REC. H7141-42 (daily ed. June 23, 2009); 155 CONG. REC. H6070-72 (daily ed. June 2, 2009); 155 CONG. REC. H6006-07 (daily ed. May 21, 2009); 155 CONG. REC. H5577-79 (May 13, 2009); 155 CONG. REC. S5449-55 (daily ed. May 13, 2009); 155 CONG. REC. H5473-81 (daily ed. May 12, 2009); 155 CONG. REC. H4996 (daily ed. Apr. 29, 2009); 155 CONG. REC. H4576-77 (daily ed. Apr. 21, 2009); 155 CONG. REC. H4515-16 (daily ed. Apr. 2, 2009); 155 CONG. REC. H3434-35 (daily ed. Mar. 16, 2009). These reports are made pursuant to the Mutual Security Act of 1954 and the International Security Assistance Act of 1978 and are available online. 22 U.S.C. [section] 1754(b)(2) (2006); Foreign Travel Reports, OFFICE OF THE CLERK, U.S. HOUSE OF REPRESENTATIVES, http://clerk.house.gov/public_disc/foreign/index.aspx (last visited Aug. 28, 2013).

(30.) Gift and Travel Filings, OFFICE OF THE CLERK, U.S. HOUSE OF REPRESENTATIVES, http://clerk.house.gov/public_disc/giftTravel.aspx (last visited Aug. 28, 2013); Gift Rule/Outside Paid Travel Database, U.S. SENATE, http://www.senate.gov/pagelayout/legislative/g_three_sec tions_with_teasers/lobbyingdisc.htm#1obbyingdisc=grt (last visited Aug. 28, 2013). These reports are available online pursuant to the Honest Leadership and Open Government Act of 2007. 2 U.S.C. [section][section] 104e, 104g (2012). House and Senate rules also regulate privately financed travel. See, e.g., 113TH CONG., RULES OF THE HOUSE OF REPRESENTATIVES 43-44 (2013) [hereinafter HOUSE RULES], available at http://clerk.house.gov/legislative/house-rules.pdf (Rule 25.5(b)-(d)); Comm. on Rules & Admin., Rules of the Senate: Gifts, U.S. SENATE, http://www .rules.senate.gov/public/index.cfm?p=RuleXXXV (last visited Aug. 28, 2013) (Rule 35.2(c)); see also COMM. ON STANDARDS OF OFFICIAL CONDUCT, 110TH CONG., 2D SESS., HOUSE ETHICS MANUAL 87-105 (2008 ed.) [hereinafter House ETHICS MANUAL], available at http://ethics .house.gov/sites/ethics.house.gov/files/documents/2008_House Ethics_Manual.pdf (explaining limits on privately financed official travel under the House Ethics Rules); Privately Sponsored Travel Review Process and Public Filings, U.S. SENATE SELECT COMM. ON ETHICS, http://www .ethics.senate.gov/public/index.cfm?p=Travel (last visited Aug. 28, 2013) (discussing reporting requirements). I obtained aggregated data on this kind of travel from LegiStorm, an organization that collects and disseminates information on congressional travel and other matters. LEGISTORM, http://www.legistorm.com/ (last visited Aug. 28, 2013).

(31.) Database of WikiLeaks Documents for 2009 (on file with the author). The cables are only a small percentage of the approximately 250,000 that WikiLeaks released. I obtained them by performing keyword searches for each member of the 111th Congress in a WikiLeaks search engine. CABLESEARCH, http://www.cablesearch.org (last visited Dec. 1, 2012) (defunct); see also Reporters Group Launches Full-Text Search Engine of WikiLeaks Cables, COMPUTERWORLD (Dec. 3, 2010, 3:43 PM), http://www.computerworld.com/s/article/9199558/ Reporters_group_launches full text search_engine_of_WikiLeaks_cables. For members of the House, the searches were, "[First Name Last Name]," "Representative [Last Name]," "Rep. [Last Name]," and "Congress[man/woman Last Name]." For members of the Senate, the searches were, "[First Name Last Name]," "Senator [Last Name]," and "Sen. [Last Name]." The resulting cables are reports to the State Department from scores of U.S. embassies, consulates, and diplomatic missions around the world; cover all manner of foreign affairs; and have classification levels ranging from sensitive to secret. Bradley Manning allegedly downloaded the cables sometime between late 2009 and early 2010 and was arrested in May 2010. Poulsen & Zetter, supra note 28. Due to the timing of Manning's arrest, the WikiLeaks disclosure likely does not capture even half of the 2010 cable traffic. This makes the 2009 cables a more complete, if slightly less recent, source for research.

(32.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(33.) Telephone Interview with Matthew A. Reynolds, supra note 23. The Defense Department limits the extent to which military aircraft are available for CODEL travel: To use a large, commercial-type aircraft, such as a 737, a CODEL must comprise at least five members of the House or at least three members of the Senate. Id. To use a small, corporate-type aircraft, such as a Gulfstream, a CODEL must have at least three House members or at least one Senator. Id. Due to the limited availability of military aircraft, some CODELs travel on commercial airlines. Id.

(34.) Id.

(35.) Id.

(36.) See, e.g., Scenesetter for CODEL McCain/Lieberman to Munich, WIKILEAKS (Feb. 4, 2009), http://wikileaks.org/cable/2009/02/09BERLIN142.html; Scenesetter for CODEL Rogers Visit to Warsaw, WIKILEAKS (Apr. 1, 2009), http://wikileaks.org/cable/2009/04/09WARSAW351 .html.

(37.) See, e.g., CODEL Payne-Tanzania Visit (Nov 13-15), WIKILEAKS (Nov. 13, 2009), http://wikileaks.org/cable/2009/11/09DARESSALAAM780.html; Three Congressional Chairman [sic] Bring Message of Support to President Calderon, WIKILEAKS (Apr. 8, 2009), http://wikileaks .org/cable/2009/04/09MEXICO1020.html.

(38.) See, e.g., CODEL Biden's Meeting with President Zardari, WIKILEAKS (Feb. 6, 2009), http://wikileaks.org/cable/2009/02/09ISLAMABAD266.html; CODEL Bishop Meeting with Iraqi Council of Representatives Speaker Ayad Al-Samarraie, WIKILEAKS (Aug. 8, 2009), http://wiki leaks.org/cable/2009/08/09BAGHDAD2134.html.

(39.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25; see also, e.g., Representative Faleomavaega's Visit Highlights Compact Issues, WIKILEAKS (Mar. 11, 2009), http://wikileaks.org/cable/2009/03/09KOLONIA 29.html ("Rep. Faleomavaega followed most of the extensive schedule prepared by post, but he and the Micronesians apparently preferred to meet on their own, perhaps to encourage a more open dialogue."); TFHO1: Honduras Coup Sitrep #69, WIKILEAKS (Oct. 2, 2009), http:// wikileaks.org/cable/2009/10/09TEGUCIGALPA1007.html ("The CODEL ... arranged its own meetings at the Presidential Palace with de facto regime President Micheletti, the Supreme Court, the Elections Tribunal (TSE), and representatives of civil society.").

(40.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(41.) See, e.g., Country Clearance Granted for CODEL Webb, WIKILEAKS (Aug, 5, 2009), http://wikileaks.org/cable/2009/08/09PHNOMPENH554.html.

(42.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(43.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25; see also Emily Heil, Rohrabacher Says Clinton Made "Reasonable Request", Posting to In the Loop, WASH. POST (Apr. 23, 2012, 12:45 PM), http://www .washingtonpost.com/blogs/in-the-loop/post/rohrabacher-says-clinton-made-reasonable-re quest/2012/04/23/gIQAGGOHcT_blog.html (discussing how Secretary Hillary Clinton ordered a military jet not to leave for Afghanistan with Congressman Dana Rohrabacher aboard).

(44.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(45.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25; see also David Binder, Javits and Pell Fly to Cuba Despite Objections of U.S., N.Y. TIMES, Sept. 28, 1974, at 1 (reporting on such a trip to Cuba by Senators Jacob Javits and Claiborne Pell); Ben Fox, DeMint Honduras Trip Planned in Defiance of U.S. Policy, HUFFINGTON POST (Oct. 3, 2009, 12:50 AM), http://www.huffingtonpost.com/ 2009/10/02/demint-honduras-trip-plan_n_307632.html (reporting on a planned trip by Senator DeMint to meet with the interim government of Honduras, which the Obama Administration has refused to recognize); CODEL Kerry's Meeting with Sudanese Presidential Advisor Nafie, WIKILEAKS (Apr. 21, 2009), http://wikileaks.org/cable/2009/04/09KHARTOUM539 .html ("[Senator Kerry] noted that, over Bush Administration objections, he had traveled to Syria twice and met with President Assad.").

(46.) CODEL members generally maintain a united front with the executive on matters of policy. See, e.g., CODEL Lynch Meets Asad, Muallim, WIKILEAKS (Apr. 6, 2009), http:// wikileaks.org/cable/2009/04/09DAMASCUS252.html (reporting a CODEL's expression of support for President Obama's stated preference for engagement as a means of resolving foreign policy problems); CODEL McConnell, WIKILEAKS (Apr. 20, 2009), http://wikileaks.org/cable/ 2009/04/09KABUL987.html ("Senator McConnell affirmed the Administration's position that the United States seeks a level playing field for candidates competing in the August election.").

(47.) See, e.g., CODEL Kyl's Meeting with Prime Minister Netanyahu: What Will the U.S. Do About Iran?, WIKILEAKS (Apr. 28, 2009), http://wikileaks.org/cable/2009/04/09TELAVIV936.html ("President Obama will pursue engagement, but Kyl said he doubted it would be successful. We should consider what to do in the mean time."); Congressmen Kirk and Larsen's Meeting with Minister of Commerce Chen Deming, WIKILEAKS (June 5, 2009), http://wikileaks .org/cable/2009/06/09BEIJING1500.html ("[Congressman Mark Kirk] stated that the Administration's projection of the U.S. budget deficit is well below what it will really be...."); Senator Webb's August 19-20 Meetings in Hanoi, WIKILEAKS (Aug. 27, 2009), http://wikileaks.org/ cable/2009/08/09HANOI803.html (reporting that Senator James Webb criticized U.S. policy regarding competing territorial claims in the South China Sea as "not sufficient" and "overly tactical").

(48.) Telephone Interview with Rachael Leman, Deputy Staff Dir., Rules Comm., U.S. House of Representatives (Nov. 5, 2012). During the Bush Administration, Vice President Dick Cheney encouraged members of Congress to establish an interparliamentary training program with Morocco under the House Democracy Partnership, but legislators declined to do so on the ground that the Moroccan Parliament failed to satisfy certain legislatively established criteria for participation. Id. For an overview of the House Democracy Partnership's practice of encouraging collaboration in the development of foreign legislative institutions, see infra note 134 and accompanying text.

(49.) Infra notes 56-58, 60-65.

(50.) See, e.g., Belarus: CODEL Cardin Secures AMCIT's Release, Advances Dialogue, WIKILEAKS (July 3, 2009), http://wikileaks.org/cable/2009/07/09MINSK217.html (reporting on a meeting between CODEL members and President Lukashenka); CODEL Hoyer Focuses on FTA and Plan Colombia in Cartagena and Medellin (April 6-8), WIKILEAKS (Apr. 27, 2009), http://wikileaks.org/cable/2009/04/09BOGOTA1359.html (documenting CODEL members' discussion of a trade promotion agreement with President Uribe); CODEL Meeks Meeting with Mugabe, WIKILEAKS (Sept. 4, 2009), http://wikileaks.org/cable/2009/09/09HARARE707.html (reporting on a meeting with President Mugabe); CODEL Price: Colombians Emphasize Defense Cooperation, Free Trade and Reelection, WIKILEAKS (Sept. 11, 2009), http://wikileaks.org/cable/ 2009/09/09BOGOTA2923.html (describing a meeting with a USAID-funded NGO); Speaker Pelosi Meeting with New Iraqi Speaker Samarraie, WIKILEAKS (May 14, 2009), http://wikileaks .org/cable/2009/05/09BAGHDAD1266.html (recounting a meeting between Speaker Nancy Pelosi and the speaker of the Iraqi Council of Representatives).

(51.) The WikiLeaks cables may be somewhat misleading in this regard. By documenting only a small number of interparliamentary contacts, they seem to suggest that contacts of that kind are rare. It appears, however, that members of Congress are involved in a variety of interparliamentary exchanges with members of foreign legislative bodies. See infra note 132 (citing authorizing statutes). It would not be surprising if State Department cables did not report the full extent of those exchanges, which Foreign Service Officers presumably do not attend.

(52.) Cf. Afghans Seek Improved Judicial Security: CSTC-A Agrees to Support Training Efforts but More Resources Likely Necessary, WIKILEAKS (Oct. 10, 2009), http://wikileaks.org/ cable/2009/10/09KABUL3185.html (describing a meeting between Senator Lindsey Graham and the Afghan chief justice).

(53.) See, e.g., Jordan: CODEL Ackerman Focused on Regional Security Issues and Cooperation, WIKILEAKS (June 4, 2009), http://wikileaks.orglcable/2009/06/09AMMAN1267.html ("The delegation thanked [General] Raqqad for his cooperation and assured him that the U.S. Congress would continue to provide resources in support of our bilateral agenda.").

(54.) See, e.g., CODEL Carper Stresses Need for Greater Afghan Leadership on Governance and Addresses Civilian Casualties, WIKILEAKS (June 1, 2009), http://wikileaks.org/cable/2009/ 06/09KABUL1378.html ("The Codel delivered effective USG messages to Karzai and other senior Afghan officials regarding the need for improved governance."); CODEL Schiff Meetings with the Defense Minister and Parliamentarians, WIKILEAKS (July 22, 2009), http://wikileaks .org/cable/2009/07/09TUNIS506.html ("Rep. Ortiez [sic] said ... that the US hoped to work to share intelligence and [to work] against transnational terrorists. The US would respond if Tunisia were attacked."); Ghana Promotes Regional Investment Hub to CODEL Butterfield, WIKILEAKS (Aug. 25, 2009), http://wikileaks.org/cable/2009/08/09ACCRA832.html ("Representative Butterfield concluded by pledging U.S. commitment to partnering with Ghana in its development and to stimulating investment in 'the emerging market of West Africa.'"); Haiti: CODEL Conyers Meets President, Prime Minister, WIKILEAKS (Apr. 30, 2009), http://wikileaks .org/cable/2009/04/09PORTAUPRINCE451.html ("Chairman Conyers and his delegation promised the U.S. would continue to support Haiti."); Three Congressional Chairman [sic] Bring Message of Support to President Calderon, supra note 37 ("During a cordial meeting with the President the three chairmen emphasized that the U.S. would support Mexico for the 'long haul' in the effort against organized crime, offered to do what was possible to expedite Merida support, and expressed their personal appreciation for President Calderon's courage."); see also David E. Sanger, With Rice out, President Is Expected to Name Kerry as Secretary of State, N.Y. TIMES, Dec. 17, 2012, at A14, available at http://www.nytimes.com/2012/12/17/us/politics/ obama-expected-to-name-kerry-as-secretary-of-state.html ("[Senator Kerry] conducted a series of quiet missions on behalf of the president, notably at moments of crisis with Afghanistan and Pakistan.").

(55.) Telephone Interview with Matthew A. Reynolds, supra note 23.

(56.) CODEL Pelosi Discusses Energy Conservation and Emissions Reduction with Shanghai Entrepreneurs, WIKILEAKS (May 29, 2009), http://wikileaks.org/cable/2009/05/09SHANGHAI241.html; CODEL Pelosi Engages U.S. Business Community in Shanghai, WIKILEAKS (May 26, 2009), http://wikileaks.org/cable/2009/05/09SHANGHAI233.html; CODEL Pelosi May 27 Meeting with PRC President Hu Jintao, WIKILEAKS (May 29, 2009), http://wikileaks.org/cable/ 2009/05/09BEIJING1428.html; CODEL Pelosi Meeting with Shanghai People's Congress Chairman, WIKILEAKS (May 25, 2009), http://wikileaks.org/cable/2009/05/09SHANGHAI229.html; CODEL Pelosi, Shanghai Mayor Discuss Climate Change, WIKILEAKS (May 26, 2009), http:// wikileaks.org/cable/2009/05/09SHANGHAI232.html; CODEL Pelosi's Meeting with Shanghai Catholic Bishop Jin, WIKILEAKS (May 25, 2009), http://wikileaks.org/cable/2009/05/09SHANG HAI230.html.

(57.) See supra note 56.

(58.) See CODEL Hears IDP Problems at Darfur's Zam Zam IDP Camp, WIKILEAKS (Aug. 23, 2009), http://wikileaks.org/cable/2009/08/09KHARTOUM970.html.

(59.) Legislators have on occasion expressed distrust of executive reports. In late 1979, for example, Senator Jesse Helms sent some of his staff to the Lancaster House Conference in London to observe talks aimed at facilitating an agreement on the terms for establishing a new, independent government for Rhodesia. The senator reportedly sent his own staff rather than wait for State Department reports because he did not "trust the State Department on th[e] issue." James Reston, The Chaos in Foreign Affairs, N.Y. TIMES, Sept. 21, 1979, at 27 (internal quotation marks omitted); see also CECIL V. CRABB, JR. & PAT M. HOLT, INVITATION TO STRUGGLE 19-20 (4th ed., 1992) ("[T]he legislative branch has made increasing efforts to acquire its own sources of information in order not to remain dependent upon information supplied by executive officials.").

(60.) CODEL Kerry Presses Syrian Vice President on Specifics, WIKILEAKS (Mar. 6, 2009), http://wikileaks.org/cable/2009/03/09DAMASCUS176.html.

(61.) Punjab Governor Taseer Tells CODEL Kyl That Extremism Is Limited to Small Minority, WIKILEAKS (Apr. 10, 2009), http://wikileaks.orglcable/2009/04/09LAHORE72.html.

(62.) Senator Webb's August 19-20 Meetings in Hanoi, WIKILEAKS (Aug. 27, 2009), http:// wikileaks.org/cable/2009/08/09HANOI803.html.

(63.) Congressmen Kirk and Larsen's Meeting with Minister of Commerce Chen Deming, WIKILEAKS (June 5, 2009), http://wikileaks.org/cable/2009/06/09BEIJING1500.html.

(64.) Bouteflika: Serious Western Sahara Autonomy Is More Than Sovereignty over Garbage Collection, WIKILEAKS (June 3, 2009), http://wikileaks.orglcable/2009/06/09ALGIERS514.html. For other communications of this kind, see, for example, Jordan: CODEL Ackerman Focused on Regional Security Issues and Cooperation, WIKILEAKS (June 4, 2009), http://wikileaks.org/cable/ 2009/06/09AMMAN1267.html ("Congressman Ellison asked the King to consider partnering with well-known Minnesota companies that specialized in water resource management.").

(65.) See, e.g., NODEL Kirk Takes up Security Issues and Visa Program During Mexico Visit, WIKILEAKS (July 7, 2009), http://wikileaks.org/cable/2009/07/09MEXICO1971.html (describing Congressman Kirk's statement of a desire to "facilitate U.S. visa issuance to the grandparents of constituents in his district"); Senator Nelson Raises Concerns over Contaminated Drywall with AQSIQ, WIKILEAKS (Aug. 20, 2009), http://wikileaks.org/cable/2009/08/09SHANGHAI367.html (describing a complaint by Senator Bill Nelson about constituents that had suffered from contaminated Chinese-made drywall); Visit of Senators Cardin, Mikulski, and Wicker to Montenegro, WIKILEAKS (June 1, 2009), http://wikileaks.org/cable/2009/06/ 09PODGORICA132.html (describing statements by Senator Barbara Mikulski promoting stronger ties between Maryland and Montenegro).

(66.) CRABB & HOLT, supra note 59, at 277.

(67.) Susan Webb Hammond, Congress in Foreign Policy, in THE PRESIDENT, THE CONGRESS, AND FOREIGN POLICY 67, 83 (Muskie et al. eds., 1986).

(68.) Barry M. Blechman, The New Congressional Role in Arms Control, in A QUESTION OF BALANCE: THE PRESIDENT, THE CONGRESS, AND FOREIGN POLICY 109, 122-23 (Thomas E. Mann ed., 1990).

(69.) Cf. CODEL Wexler Tells Ankara That Gaza Response Undercut Pro-Turkey Advocacy in Washington, WIKILEAKS (Mar. 4, 2009), http://wikileaks.org/cable/2009/03/09ANKARA336 .html ("As a valued and trusted friend of Turkey, Congressman Wexler was uniquely positioned to deliver a message the Turks needed to hear: Your response to the Gaza situation damaged Turkey's image in Washington.... The Turks expressed their appreciation for the Congressman's friendship and frankness....").

(70.) James M. Lindsay, Congress and Diplomacy, in CONGRESS RESURGENT 261, 278 (Randall B. Ripley & James M. Lindsay eds., 1993) ("When presidents want to put pressure on another country, but do not want to be seen doing so, Congress provides a convenient villain.").

(71.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(72.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25; see also, e.g., CODEL Burr Hears About Counterterrorism, Democracy Promotion, Iran and Western Sahara, WIKILEAKS (June 9, 2009), http://wikileaks .org/cable/2009/06/09RABAT479.html ("CODEL Burr learned a lot about Moroccan-U.S. cooperation in a short time, especially concerning counterterrorism and democracy promotion."); CODEL Meeks Discusses Human Rights and Democracy with Senior Tunisian Officials, WIKILEAKS (Sept. 1, 2009), http://wikileaks.org/cable/2009/09/09TUNIS644.html (reporting that "discussions served as a useful opportunity for the Congressional delegation to remind the [Tunisian government] that the [United States] continues to focus on [democracy and human rights] issues").

(73.) Missing Referenced Cables, CABLE DRUM (Nov. 12, 2011), http://www.cabledrum.net/ pages/referenced_cables.php. Comparing the cables for 2009 to the public travel reports also suggests that the WikiLeaks disclosure was incomplete. The released cables document approximately 700 trips by federal legislators, while the public reports document over 1,900. See supra notes 29-31 and accompanying text. At least some of those 1,900 trips were likely discussed in cables that WikiLeaks never even obtained.

(74.) Supra note 29.

(75.) Supra note 30.

(76.) Cf. R. ERIC PETERSEN ET AL., CONG. RESEARCH SERV., R41388, INTERNATIONAL TRAVEL BY CONGRESS: LEGISLATION IN THE 111TH CONGRESS, BACKGROUND, AND POTENTIAL POLICY OPTIONS (2010), available at http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA528261 (providing an analysis of public reports on publicly financed congressional travel); Memorandum from R. Eric Petersen, Analyst in Am. Nat'l Gov't, Cong. Research Serv., Terrence L. Lisbeth, Ref. Ass't, Cong. Research Serv., and Mabel Gracias, Library Technician Ref. Ass't, Cong. Research Serv., to Timothy V. Johnson, Congressional International Travel: Data Since 1993 and Options for Congress (Feb. 26, 2010), available at http://hobnobblog.com/wp-con tent/uploads/2013/06/CongressionalTravel_2010_Feb26.pdf (same).

(77.) The reasons for these nondisclosures are unclear. Sometimes members of Congress meet with foreign officials while vacationing abroad. Telephone Interview with Matthew A. Reynolds, supra note 23. Meetings of this kind might yield State Department cables if the legislators notify local embassy staff beforehand, and yet the public reports would not document the travel because the legislators would have paid for it themselves. Another possibility is that legislators neglected to report their travel on return.

(78.) See, e.g., Russian Experts Give Congressman Rogers a Snapshot of Political Debate, WIKILEAKS (May 13, 2009), http://wikileaks.org/cable/2009/05/09MOSCOW1199.html (reporting on a meeting between Congressman Mike Rogers and Russian scholars).

(79.) See, e.g., STAFFDEL Kuiken-Cammack's Meeting with PM Advisor Ron Dermer, WIKILEAKS (Dec. 18, 2009), http://wikileaks.org/cable/2009/12/09TELAVIV2734.html.

(80.) The gap in these numbers may reflect the fact that a member of the majority party, which in 2009 was the Democrats, usually organizes and manages each CODEL. Telephone Interview with Matthew A. Reynolds, supra note 23. Minority-only CODELs tend to be less common as a result. Id.

(81.) Interactive Travel Map, U.S. DEP'T OF STATE, http://www.state.gov/secretary/trvl/ map/ (last visited Aug. 28, 2013). I obtained the reported figure by counting each visit to a foreign country as one trip.

(82.) This number counts Palestine and Taiwan as countries. It is only possible to report a minimum figure because the House and Senate intelligence committees typically do not report countries of destination when their members travel abroad on committee business. Most of the reports disclose only the destination region or continent, or no destination at all. See, e.g., 155 CONG. REC. H9666 (daily ed. Sept. 16, 2009) (reporting travel to the "Middle East," among other regions).

(83.) Gifts to Federal Employees from Foreign Government Sources Reported to Employing Agencies in Calendar Year 2009, 76 Fed. Reg. 2956 (Jan. 18, 2011).

(84.) This finding is generally consistent with data from other years. E.g., Glenn R. Parker & Stephen C. Powers, Searching for Symptoms of Political Shirking: Congressional Foreign Travel, 110 PUB. CHOICE 173, 189 (2002) ("There is strong evidence that foreign travel is related to members' responsibilities on congressional committees. Specifically, membership on the House committees on Appropriations, Armed Services, and International Relations is related to higher levels of foreign travel.").

(85.) Legislators tend to travel less frequently during election years. Telephone Interview with Matthew A. Reynolds, supra note 23.

(86.) See, e.g., Arthur Bestor, "Advice" from the Very Beginning, "Consent" When the End Is Achieved, 83 AM. J. INT'L L. 718 (1989) (describing the important role of the Senate, and the exclusion of the House, in the treaty-making process).

(87.) Telephone Interview with Matthew A. Reynolds, supra note 23.

(88.) Id.

(89.) Id.

(90.) Id.; Telephone Interview with Jeffrey Bergner, supra note 25.

(91.) Foreign Leaders and Dignitaries Who Have Addressed the U.S. Congress: Fast Facts, UNITED STATES HOUSE OF REPRESENTATIVES: HISTORY, ART & ARCHIVES, http://history.house .gov/Institution/Foreign-Leaders/Fast-Facts/ (last visited Aug. 28, 2013). For recent examples, see Felicia Sonmez, South Korean President Lee Myung-bak to Address Congress Next Week, Posting to 2chambers, WASH. POST (Oct. 7, 2011, 2:04 PM), http://washingtonpost.com/blogs/ 2chambers/post/south-korean-president-lee-myung-bak-to-address-congress-next-week/2011/ 10/07/gIQAVBfJTL_blog.html, and Transcript: Israeli Prime Minister Binyamin Netanyahu's Address to Congress, WASH. POST (May 24, 2011), http://articles.washingtonpost.com/2011-05-24/world/35264020_1_israel- young-people-democracy.

(92.) U.S. DEP'T OF JUSTICE, REPORT OF THE ATTORNEY GENERAL TO THE CONGRESS OF THE UNITED STATES ON THE ADMINISTRATION OF THE FOREIGN AGENTS REGISTRATION ACT OF 1938, AS AMENDED, FOR THE SIX MONTHS ENDING JUNE 30, 2009, at I-2, available at http:// www.fara.gov/reports/June30-2009.pdf. The numbers have remained fairly steady in recent years. See, e.g., U.S. DEP'T OF JUSTICE, REPORT OF THE ATTORNEY GENERAL TO THE CONGRESS OF THE UNITED STATES ON THE ADMINISTRATION OF THE FOREIGN AGENTS REGISTRATION ACT OF 1938, AS AMENDED, FOR THE SIX MONTHS ENDING JUNE 30, 2011, at I-3, available at http:// www.fara.gov/reports/FARA_SAR_063011.pdf (reporting 382 entities and 1,751 individuals registered).

(93.) William C. Olson, The US Congress: An Independent Force in World Politics?, 67 INT'L AFF. 547, 557 (1991).

(94.) Telephone Interview with Matthew A. Reynolds, supra note 23; Telephone Interview with Jeffrey Bergner, supra note 25.

(95.) Anupama Narayanswamy et al., Adding It up: The Top Players in Foreign Agent Lobbying, PROPUBLICA (Aug. 18, 2009, 1:34 PM) (corrected Oct. 23, 2009), http://www.propublica .org/article/adding-it-up-the-top-players-in-foreign-agent-lobbying-718.

(96.) See Barak Ravid, Netanyahu Will Ask Obama to Threaten Iran Strike, HAARETZ (Feb. 29, 2012, 2:41 AM), http://www.haaretz.com/print-edition/news/netanyahu-will-ask-obamato-threaten-iran-strike-1.415428 ("[T]he Obama administration suspects Netanyahu is using Congress and the Republican candidates in the presidential race to put pressure on Obama to support ... a strike.").

(97.) See Kevin Bogardus & Rachel Leven, Taiwan Lobbyists Pressure White House to Approve Sale of F-16 Fighter Jets, HILL (Oct. 11, 2011, 5:30 AM), http://thehill.com/business-alobbyingy186627-taiwan- lobbyists-pressure-white-house-on-f-16-sales ("A lobbying team ... representing Taiwan ... gather[ed] lawmaker signatures for two letters that were sent to President Obama arguing for the sale of the most advanced fighter jets to the country.").

(98.) Eric Lipton, Some Countries Lobby for More in Race for Visas, N.Y. TIMES, May 12, 2013, at A1, available at http://www.nytimes.com/2013/05/12/us/politics/tucked-in-immigration-bill-special-deals-for- some.html?_r=0.

(99.) CECIL V. CRABB, JR. ET AL., CONGRESS AND THE FOREIGN POLICY PROCESS 40 (2000).

(100.) Telephone Interview with Jeffrey Bergner, supra note 25.

(101.) Question of Eligibility, N.Y. TIMES, Aug. 15, 1892, at 4 (Senators William B. Allison and John P. Jones and Representative James B. McCreary).

(102.) To Work for Bimetallism, N.Y. TIMES, Apr. 13, 1897, at 3 (Senator Edward O. Wolcott).

(103.) The Canadian Commission: Men Named by the President to Meet the Representatives of Great Britain, N.Y. TIMES, July 17, 1898, at 6 (Senators Charles W. Fairbanks and George Gray and Representative Nelson Dingley).

(104.) Peace Commission Filled, N.Y. TIMES, Sept. 10, 1898, at 1 (Senators William P. Frye, Cushman K. Davis, and George Gray).

(105.) Each Power to Send 4 to Arms Parley, N.Y. TIMES, Sept. 10, 1921, at 1 (Senators Henry Cabot Lodge and Oscar Underwood).

(106.) Hughes, Mellon, Hoover, Smoot, Burton, Named on Foreign Debt Commission, N.Y. TIMES, Feb. 22, 1922, at 1. The Attorney General issued an opinion concluding that the appointments were constitutional notwithstanding Article I, Section 6's prohibition on legislators contemporaneously holding "civil office under the authority of the United States." See S. Doc. No. 67-151, at 2-4 (1922).

(107.) E.g., Fisher, supra note 4, at 1517 ("During 1977 and 1978, twenty-six Senators served in Geneva as official advisers to the SALT II negotiating team."); Reed Slated to Go to 5-Power Parley, N.Y. TIMES, Oct. 21, 1929, at 1 (reporting President Herbert Hoover's selection of Senators David A. Reed and Joseph T. Robinson as U.S. delegates to the London Naval Conference); Team of Observers for Salvador Vote Announced by U.S., N.Y. TIMES, Mar. 2, 1982, at A7 (reporting a State Department announcement that Senator Nancy Kassebaum would lead an official delegation to observe elections in El Salvador and that Representative Bob Livingston would be part of the delegation); see also Blechman, supra note 68, at 122 (recounting how members of a Senate Arms Control Observer Group "me[t] separately with Soviet negotiators, both to learn firsthand of Soviet positions and to express their own concerns").

(108.) THOMAS M. FRANCK & EDWARD WEISBAND, FOREIGN POLICY BY CONGRESS 141 (1979).

(109.) Id. at 141, 147.

(110.) See, e.g., 62 CONG. REC. 2893-96 (1922) (discussing disapproval of President Warren G. Harding's appointment of members of Congress to the Foreign Debt Funding Commission); 36 CONG. REC. 2695-96 (1903) (describing the president's use of federal legislators to carry out diplomatic functions, such as treaty negotiations, and certain senators' objections to that practice); 2 GEORGE F. HOAR, AUTOBIOGRAPHY OF SEVENTY YEARS 49-50 (1903).

(111.) See supra notes 32-38 and accompanying text.

(112.) Logan Act, ch. 1, 1 Stat. 613 (1799) (codified as amended at 18 U.S.C. [section] 953 (2012)).

(113.) See Woodrow Wilson, President's Letter to Senator Harding, N.Y. TIMES, Oct. 19, 1920, at 1; Warren G. Harding, Senator Harding's Reply, N.Y. TIMES, Oct. 19, 1920, at 1.

(114.) Seeks Prosecution of Senator Prance, N.Y. TIMES, Apr. 15, 1922, at 1.

(115.) See, e.g., Sara Fritz, Wright's Latin Role Assailed by Republicans, L.A. TIMES, Nov. 14, 1987, at SD1 (House Speaker Jim Wright); James Reston, Eisenhower Official Sees M'Carthy [sic] Plan on Ships as 'Phony', N.Y. TIMES, Mar. 30, 1953, at 1 (Senator Joseph McCarthy).

(116.) See, e.g., Cable to Lloyd George from Senator Prance, N.Y. TIMES, Apr. 16, 1922, at 2 (reporting that the attorney general would pursue the prosecution of Senator France only at the insistence of the State Department). The best history on the Logan Act is Detlev F. Vagts, The Logan Act: Paper Tiger or Sleeping Giant?, 60 AM. J. INT'L L. 268 (1966). See also CONG. RESEARCH SERV., 106TH CONG., STUDY ON TREATIES AND OTHER INTERNATIONAL AGREEMENTS: THE ROLE OF THE UNITED STATES SENATE 98-100 (Comm. Print 2001), available at http://www.gpo.gov/fdsys/pkg/CPRT-106SPRT66922/pdf/CPRT-106SPRT66922.pdf (summarizing the history of the Logan Act).

(117.) In recent years, some have cited the Logan Act as a way of criticizing legislators who hold discussions with foreign officials. See, e.g., Andrew C. McCarthy, Don't Investigate Pelosi--Debate Her, NAT'L REV. ONLINE (Apr. 7, 2007, 11:25 AM), http://www.nationalreview.com/ articles/220551/dont-investigate-pelosi-debate-her/andrew-c-mccarthy. The executive, however, has not provided any indication that it might prosecute, and for good reason--given that contemporary CODELs obtain prior approval from congressional leadership and generally benefit from executive logistical support, it is hard to argue that their members communicate "without authority of the United States," as prosecution would require. 18 U.S.C. [section] 953 (2012); see also supra notes 32-38 and accompanying text (discussing how the executive departments facilitate CODEL travel).

(118.) See William E. Borah, Borah Answers Oil Men: No Criticism Can Deflect Him from Course on Mexico He Says, N.Y. TIMES, Mar. 11, 1927, at 2.

(119.) KARL SCHRIFTGIESSER, THE GENTLEMAN FROM MASSACHUSETTS: HENRY CABOT LODGE 301-04 (1944); see also Says Lodge Tried to Thwart Wilson: Henry White, Biographer, Asserts Senator Sent Secret Note to Allied Peace Delegates, N.Y. TIMES, Oct. 29, 1930, at 34.

(120.) See H.R. Res. 278, 90th Cong., 113 CONG. REC. 4997, 5037-38 (1967) (enacted) (excluding Powell from Congress); Texts of Statements and Resolution of Powell Panel, N.Y. TIMES, Feb. 24, 1967, at 20 ("As Chairman of the Committee on Education and Labor, Mr. Powell made false reports on expenditures of foreign exchange currency to the Committee on House Administration."); see also Cabell Phillips, Powell Defends His Behavior as Labor Committee Chairman, N.Y. TIMES, Feb. 21, 1963, at 1 (reporting on the political backlash against Powell's extensive overseas travel).

(121.) See Bernard Gwertzman, Nations Not Named, N.Y. TIMES, Nov. 27, 1979, at A1; John Kifner, Congressman Visits Captives in Tehran, N.Y. TIMES, Nov. 26, 1979, at A1. For just a few examples of legislators communicating directly with foreign governments in recent decades, see Adam Clymer, Senators Are Flocking to Panama for Tour of Duty, N.Y. TIMES, Jan. 9, 1978, at A12 (discussing trips to Panama and meetings with Panamanian officials by senators deliberating on whether to ratify the Torrijos--Carter Treaties); Christopher Layne, Lone Ranger Diplomacy a Risky Path for Liberals, L.A. TIMES, Feb. 12, 1988, at C7, available at http://articles .latimes.com/1988-02-12/local/me-28387_1_u-s-foreign-policy (describing how House Speaker Jim Wright launched an independent diplomatic effort by meeting secretly for three days with Nicaraguan President Daniel Ortego, three members of the Contra leadership, and Nicaragua's cardinal Miguel Obando y Bravo); 8 U.S. Legislators Will Pay a Visit to China Next Month, N.Y. TIMES, June 27, 1973, at 6 (discussing a trip by Senator Warren Magnuson and seven other members of Congress); and Dole Cautious on U.S. Role in Gulf Combat, N.Y. TIMES, Dec. 31, 1990, at 6 (describing how Senator Bob Dole spoke with the Iraqi ambassador to the United States to see whether Baghdad would be willing to change the date of talks on preventing the Gulf War).

(122.) Fox Butterfield, Teng Invites Senator Goldwater to Peking for a Talk, N.Y. TIMES, Jan. 3, 1979, at A2.

(123.) STEPHEN J. SOLARZ, JOURNEYS TO WAR & PEACE 27 (2011).

(124.) John Lee, Why Burma Would Turn Against China, ATLANTIC (Feb. 2, 2012, 9:19 AM), http://www.theatlantic.com/international/archive/2012/02/why-burma-would-turnagainst-china/252412/; Kevin Sieff, U.S. Senators, Afghan Leaders Discuss Parameters for LongTerm Partnership, WASH. POST (Feb. 19, 2012), http://articles.washingtonpost.com/2012-0219/world/35445965_1_night-raids- afghan-security-forces-afghan-leader; Senator 'Optimistic' Egypt NGO Standoff Near End, CNN (Feb. 20, 2012, 3:11 PM), http://www.cnn.com/2012/02/ 20/world/africa/egypt-ngos/index.html?hptHP_t3.

(125.) But see Binder, supra note 45 (reporting on State Department opposition to a trip to Cuba by Senators Jacob Javits and Claiborne Pell); Al Kamen with Emily Hell, Message Sent; Messenger Grounded, WASH. POST, Apr. 23, 2012, at A17 (reporting that Secretary Clinton grounded a military jet carrying a CODEL headed for Afghanistan because of objections from President Karzai).

(126.) Lindsay, supra note 70, at 264.

(127.) Olson, supra note 93, at 556-57.

(128.) Lindsay, supra note 70, at 263-64 ("During the 101st Congress (1989-90), the House Foreign Affairs Committee received 132 foreign dignitaries and 34 foreign delegations, while the Senate Foreign Relations Committee received foreign dignitaries on 80 occasions ....").

(129.) Telephone Interview with Matthew A. Reynolds, supra note 23; see also 22 U.S.C. [section] 1754(b) (2006) (making foreign currency available to members of Congress for foreign travel).

(130.) 22 U.S.C. [section] 1754(b).

(131.) See House RULES, supra note 30, at 1, 13, 40 (Rules 1.10, 10.8, and 24.10); Comm. on Rules & Admin., Rules of the Senate: Public Financial Disclosure, U.S. SENATE, available at http://www.rules.senate.gov/public/index.cfm?p=RuleXXXIV (Rule 34). For other rules regarding foreign travel by members of Congress, see House ETHICS MANUAL, supra note 30, at 87-105.

(132.) E.g., 22 U.S.C. [section] 276c (2006) (providing for the designation of Senate delegates to the Interparliamentary Union); id. [section] 276d (providing for the appointment of legislators to the U.S.--Canada Interparliamentary Group); id. [section] 276h (U.S.--Mexico Interparliamentary Group); id. [section] 2761 (United Kingdom); id. [section] 276m (Conference for Security and Cooperation in Europe); id. [section] 276n (China); id. [section] 2760 (Russia); id. [section] 276p (Supp. V 2011) (Japan); id. [section] 1928a (2006) (NATO).

(133.) See 22 U.S.C. [section] 2452(a)(2)(i) (providing for cultural exchanges in the form of "visits and interchanges between the United States and other countries of leaders, experts in fields of specialized knowledge or skill, and other influential or distinguished persons"); id. [section] 2458a(a) (permitting the "acceptance by a Federal employee of grants and other forms of assistance provided by a foreign government to facilitate the participation of such Federal employee in a cultural exchange ... of the type described in section 2452(a)(2)(i)," and defining "Federal employee" to include members of Congress in accordance with 5 U.S.C. [section] 7342(a)(1)(F)). Foreign travel under this law is increasingly common. T.W. Farnam, Congressional Staffers Often Travel on Tabs of Foreign Governments, WASH. POST, Feb. 18, 2013, available at http://www.washingtonpost.com/politics/congressional-staffers-often-travel-ontabs-of-foreign- governments/2013/02/17/25e39938-7625-11e2-8f84-3e4b513b1a13_story.html.

(134.) H.R. Res. 135, 109th Cong. [section] 5(a) (2005) (enacted); accord H.R. Res. 5, 112th Cong. [section] 4 (2011) (enacted); H.R. Res. 5, 111th Cong. [section] 4(b) (2009) (enacted); H.R. Res. 24, 110th Cong. (2007) (enacted). The House Democracy Partnership reported as follows:

   In 2009, the Commission sent Members of Congress on assistance
   missions to seven partner countries, hosted two seminars in
   Washington for 48 MPs from eight partner countries, hosted seminars
   in Macedonia and Kenya for 54 staff from nine countries, and hosted
   two legislative staff institutes in Washington for 52 staff from 13
   legislatures.


HOUSE DEMOCRACY ASSISTANCE COMM'N, 111TH CONC., 2009 ANNUAL REPORT iii (2009), available at http://hdac.house.gov/docs/HDAC_2009_Annual_Report.pdf.

(135.) About the Commission, COMM'N ON SEC. & COOPERATION IN EUROPE (U.S. HELSINKI COMM'N), http://www.csce.gov/index.cfm?FuseAction=AboutCommission.WorkOfCom mission (last visited Aug. 28, 2013); see also 22 U.S.C. [section] 3003(a) (2006) (establishing Commission membership).

(136.) Trade Act of 2002 [section] 2107(a)(4), 19 U.S.C. [section] 3807(a)(4) (2012).

(137.) See, e.g., supra notes 1-6 (providing examples of the orthodoxy in legal scholarship).

(138.) U.S. CONST. art. II, [section] 2, cl. 1.

(139.) Id. cl. 2.

(140.) Id.

(141.) Id. [section] 3.

(142.) Id.

(143.) Cf. Bradley & Flaherty, supra note 4 (rejecting the position that the Vesting Clause is a source of foreign affairs powers).

(144.) U.S. CONST. art. II, [section] 1, cl. 1.

(145.) Saikrishna B. Prakash & Michael D. Ramsey, The Executive Power over Foreign Affairs, 111 YALE L.J. 231, 317-24 (2001) [hereinafter Prakash & Ramsey, Executive Power]; Saikrishna B. Prakash & Michael D. Ramsey, Foreign Affairs and the Jeffersonian Executive: A Defense, 89 MINN. L. REV. 1591, 1673-74 (2005) [hereinafter Prakash & Ramsey, Jeffersonian Executive].

(146.) Presidents have preferred to rely simultaneously on both. See, e.g., Constitutionality of Section 7054 of the Fiscal Year 2009 Foreign Appropriations Act 4-5 (Op. O.L.C. June 1, 2009), http://www.justice.gov/olc/2009/section7054.pdf [hereinafter Constitutionality of Section 7054].

(147.) Id.

(148.) See Issues Raised by Foreign Relations Authorization Bill, 14 Op. O.L.C. 37, 37-39, 42 (1990) (concluding that a statute intruded on the president's diplomacy powers by conditioning the president's ability to obligate appropriated funds for U.S. delegations to the Conference on Security and Cooperation in Europe on his inclusion of certain individuals in the delegation).

(149.) See Constitutionality of Section 7054, supra note 146, at 4, 7-8 & n.9 (concluding that an act of Congress unconstitutionally interfered with the president's diplomacy powers by prohibiting the State Department from using appropriated funds to pay for a U.S. delegation to any UN agency, commission, or body that is chaired by a terrorist-list state); Bill to Relocate United States Embassy from Tel Aviv to Jerusalem, 19 Op. O.L.C. 123 (1995) (concluding that a statute usurped Article II diplomacy powers by conditioning the president's ability to obligate appropriated State Department funds on the building and opening of an embassy in Jerusalem).

(150.) See, e.g., Placing of United States Armed Forces Under United Nations Operational or Tactical Control, 20 Op. O.L.C. 182 (1996) (concluding that a statute unconstitutionally interfered with Article II diplomacy powers by prohibiting the president from placing U.S. armed forces participating in UN peacekeeping operations under UN operational or tactical control).

(151.) See Issues Raised by Provisions Directing Issuance of Official or Diplomatic Passports, 16 Op. O.L.C. 18 (1992) (concluding that a statute was unconstitutional because it purported to restrict the president's diplomacy powers by prohibiting the State Department from issuing more than one passport to U.S. government officials, given that the purpose of the additional passports is to facilitate compliance with an Arab League policy of denying entrance to individuals with passports that reflect travel to Israel).

(152.) U.S. CONST. art. II, [section] 2, cl. 1.

(153.) Id. cl. 2.

(154.) Id.

(155.) Id. [section] 3.

(156.) Id.

(157.) See Vienna Convention on the Law of Treaties art. 2.1(a), May 23, 1969, 1155 U.N.T.S. 331, 333 ("'Treaty' means an international agreement concluded between States in written form and governed by international law....").

(158.) U.S. CONST. art. II, [section] 2, cl. 2.

(159.) Id. [section] 3.

(160.) See, e.g., Treaty Between the United States of America and the Russian Federation on Measures for the Further Reduction and Limitation of Strategic Offensive Arms arts. VII, VIII, IX, XII, U.S.--Russ., Apr. 8, 2010, S. Treaty Doc. No. 11-5 [hereinafter New START Treaty], available at http://www.state.gov/documents/organization/140035.pdf; Treaty Between the United States of America and the Union of Soviet Socialist Republics on the Reduction and Limitation of Strategic Offensive Arms arts. VIII, XV, U.S.--U.S.S.R., July 31, 1991, S. Treaty Doc. No. 102-20 [hereinafter START I], available at http://www.state.gov/www/global/arms/ starthtm/start/treatytc.html#TREATYTOC.

(161.) International Convention for the Suppression of the Financing of Terrorism arts. 9(3)(a), 19, Dec. 9, 1999, 2178 U.N.T.S. 197, 234, 238.

(162.) See, e.g., U.N. Charter arts. 13, 16, 20, 23, 26, 28.

(163.) See U.S. CONST. art. VI, cl. 2; Carlos Manuel Vazquez, Treaties as Law of the Land: The Supremacy Clause and the Judicial Enforcement of Treaties, 122 HARV. L. REV. 599, 611-22 (2008). Because it asserts that customary international law ("CIL") is federal common law, the so-called "modern position" on CIL's domestic status would also impose on the executive a Take Care Clause duty to carry out CIL-mandated diplomatic communications. See Beth Stephens, The Law of Our Land: Customary International Law as Federal Law After Erie, 66 FORDHAM L. REV. 393, 394 (1997) (arguing that CIL is part of federal common law). But see Curtis A. Bradley & Jack L. Goldsmith, Customary International Law as Federal Common Law: A Critique of the Modern Position, 110 HARV. L. REV. 815 (1997) (rejecting the modern position).

(164.) See Edward T. Swaine, Taking Care of Treaties, 108 COLUM. L. REV. 331, 342-72 (2008) (arguing that the Take Care Clause imposes a duty on the president to enforce treaty obligations). But see Medellin v. Texas, 552 U.S. 491, 532 (2008) (concluding that the Clause does not impose a duty to enforce non-self-executing treaties).

(165.) U.S. CONST. art. II, [section] 2, cl. 1.

(166.) Id. cl. 2.

(167.) See Laurence H. Tribe, Taking Text and Structure Seriously: Reflections on Free-Form Method in Constitutional Interpretation, 108 HARV. L. REV. 1221, 1256 (1995) (citing Myers v. United States, 272 U.S. 52, 161-64 (1926)). But see Prakash & Ramsey, Executive Power, supra note 145, at 244 (arguing that the Appointments Clause is not the source of the power to recall ambassadors).

(168.) U.S. CONST. art II, [section] 1, cl. 1.

(169.) See generally Prakash & Ramsey, Executive Power, supra note 145 (making this argument); Prakash & Ramsey, Jeffersonian Executive, supra note 145 (same).

(170.) See generally Prakash & Ramsey, Executive Power, supra note 145, at 265-72 (arguing in favor of the Vesting Clause Thesis).

(171.) 1 WILLIAM BLACKSTONE, COMMENTARIES *245.

(172.) See supra notes 147-151 and accompanying text.

(173.) U.S. CONST. art. II, [section] 2.

(174.) See STUART) supra note 8, at 7-8 ("A report of the Senate Foreign Relations Committee in 1888 stated that some 438 persons had been appointed or recognized by the President without the advice or consent of the Senate or the express authority of Congress to conduct negotiations and conclude treaties."); see also, e.g., Paul Richter, Obama Picks Mideast, S. Asia Envoys, L.A. TIMES, Jan. 23, 2009, at A3, available at http://articles.latimes.com/2009/ jan/23/world/fg-state23 (discussing President Obama's appointment of George Mitchell as special envoy to the Middle East and Richard Holbrooke as special representative to Afghanistan and Pakistan).

(175.) Cf. Prakash & Ramsey, Executive Power, supra note 145 (explaining the Vesting Clause Thesis).

(176.) See discussion infra Part III. A difference in the text of the Article I and Article II Vesting Clauses might conceivably warrant different approaches to the interpretation of enumerated legislative and executive powers. Specifically, some have argued in favor of interpreting enumerated powers in Article I more narrowly than enumerated powers in Article II on the view that the Article I Vesting Clause "refers the reader to power grants contained elsewhere in the Constitution" and thus "indicates that Congress is receiving only a subset of the conceptual category of 'legislative Powers,'" while the Article II Vesting Clause grants the president "the full scope of the conceptual categor[y] of executive ... power." Gary Lawson, What Lurks Beneath: NSA Surveillance and Executive Power, 88 B.U.L. REV. 375, 388 (2008). On this view, comparatively strict interpretations of enumerated powers in Article I are necessary to honor the Article I Vesting Clause's rule that Congress possesses only those powers "[t]herein granted." U.S. CONST. art. I, [section] 1. By contrast, strict interpretations of enumerated powers in Article II are unnecessary to honor the Article II Vesting Clause if that Clause establishes that the president possesses even those executive powers that do not fall within the ambit of any enumerated power. This line of reasoning, however, presupposes that the Article I and Article II Vesting Clauses are in fact different. Because the Discrete Powers Thesis rejects that premise in holding that the Article II Vesting Clause is not an independent source of executive power, there is no reason for a proponent of this thesis to approach the interpretation of enumerated powers differently depending on their location in Article I or II.

(177.) See United States v. Louisiana, 363 U.S. 1, 35 (1960) ("The President ... is the constitutional representative of the United States in its dealings with foreign nations."); United States v. Curtiss-Wright Exp. Corp., 299 U.S. 304, 319 (1936) ("In th[e] vast external realm [of foreign affairs] ... the President alone has the power to speak or listen as a representative of the nation."). It is not possible to disentangle this dimension completely from functional breadth; certain functions seem to follow from the president's capacity to speak on behalf of the United States, even in the absence of other support in the text of Article IL See, e.g., Lewis S. Yelin, Head of State Immunity as Sole Executive Lawmaking, 44 VAND. J. TRANSNAT'L L. 911, 951-62 (2011) (arguing that the president's power to conduct sovereign diplomacy implies executive authority to make decisions about whether foreign heads of state are entitled to immunity from suit).

(178.) Cf. Vienna Convention on the Law of Treaties, supra note 157, art. 2.1(a), at 333 ("'Treaty' means an international agreement concluded between States in written form and governed by international law.... "); id. art. 26, at 339 ("Every treaty in force is binding upon the parties to it and must be performed ... in good faith.").

(179.) 1 BLACKSTONE, supra note 171, at * 245.

(180.) To the extent that they discussed the issue, delegates to the Constitutional Convention described the future Department of Foreign Affairs as an executive department that would operate under presidential control. See 1 THE RECORDS OF THE FEDERAL CONVENTION OF 1787, at 111 (Max Farrand ed., rev. ed. 1937) [hereinafter FARRAND'S RECORDS] (Mason); id. at 292 (Hamilton Plan); 2 id. at 53-54 (Madison); id. at 135-36 (Pinckney); id. at 329 (Ellsworth); id. at 335-36, 343 (Morris); id. at 367 (Rutledge, on behalf of the Committee of Detail); 3 id. at 111, 606 (Pinckney). The most detailed proposal, submitted by Gouverneur Morris to the Committee of Detail on August 20, called for a "Council of State" to "assist the President in conducting public affairs." 2 id. at 335. This council was to include a Secretary of Foreign Affairs, who would be appointed by the president and charged with a duty "to correspond with all foreign Ministers, prepare plans of Treaties, and consider such as may be transmitted from abroad--and generally to attend to the Interests of the United States, in their connections with foreign Powers." Id. at 335-36. Drafts of the Constitution eventually abandoned any reference to the secretary of foreign affairs and his duties. Id. at 367, 499, 542-43, 599. No one, however, voiced doubt that the department would be part of the new government and executive in character. Nor did anyone dispute the understanding, reflected in Morris's original draft, that the secretary of foreign affairs would be responsible for handling official diplomatic correspondence with foreign governments. If that responsibility suggested anything about the president in whose cabinet the secretary was to serve, then it is hard to avoid the conclusion that the delegates understood the president to hold ultimate authority over the execution of official diplomatic communications between the United States and foreign governments. Cf. ABRAHAM D. SOFAER, WAR, FOREIGN AFFAIRS AND CONSTITUTIONAL POWER 33 (1976) ("[Morris's motion] would have had the Convention recognize as executive functions the clay-to-day management of ... foreign ... affairs."). Statements from the ratification debates also suggest an understanding that the president holds the exclusive power to engage in sovereign diplomacy. See, e.g., THE FEDERALIST NO. 72, at 403-04 (Alexander Hamilton) (Clinton Rossiter ed. with Charles R. Kesler introduction and notes, 1999) (explaining that the "actual conduct of foreign negotiations" is executive in nature, and that those "to whose immediate management these ... matters are committed ought to be considered as the assistants or deputies of the Chief Magistrate, and on this account ... ought to derive their offices from his appointment"); id. No. 84, at 487 (Alexander Hamilton) (explaining that the "management of foreign negotiations will naturally devolve" on the president); 3 FARRAND'S RECORDS, supra, at 162 ("The senate can make no treaties; they can approve of none unless the President of the United States lay it before them.").

(181.) ARTICLES OF CONFEDERATION OF 1781, art. IX. Congress created a Department of Foreign Affairs shortly after the adoption of the Articles of Confederation, but the department was a mere agent of Congress, with powers more clerical than substantive. 19 JOURNALS OF THE CONTINENTAL CONGRESS, 1774-1789, at 42-44 (Gaillard Hunt ed., 1912) [hereinafter JOURNALS OF THE CONTINENTAL CONGRESS]. The Secretary of Foreign Affairs held duties to keep records; transmit and, if necessary, translate communications between Congress and foreign governments; and gather information about overseas conditions from American diplomats. 28 id. at 56 (John C. Fitzpatrick ed., 1933); 22 id. at 87-92 (Galliard Hunt ed., 1914); 19 id. at 42-44 (1912).

(182.) See, e.g., Letter from John Jay to Thomas Jefferson (July 24, 1787), in 3 THE DIPLOMATIC CORRESPONDENCE OF THE UNITED STATES OF AMERICA, FROM THE SIGNING OF THE DEFINITIVE TREATY OF PEACE, 10TH SEPTEMBER, 1783, TO THE ADOPTION OF THE CONSTITUTION, MARCH 4, 1789, at 234, 234-35 (1833) [hereinafter DIPLOMATIC CORRESPONDENCE] (discussing a congressional resolution confirming the appointment of Don Francisco Chiappe as the American agent in Morocco); 31 JOURNALS OF THE CONTINENTAL CONGRESS, supra note 181, at 692 (John C. Fitzpatrick ed., 1934) (recording a motion to vacate the "commission and instructions issued to Mr. John Lamb[] for the purpose of negotiating with the Barbary powers").

(183.) See, e.g., Letter from James Monroe to James Madison (July 12, 1785), in 22 LETTERS OF DELEGATES TO CONGRESS, 1774-1789, at 502, 504 (Paul H. Smith ed., 1995) [hereinafter LETTERS OF DELEGATES TO CONGRESS] (discussing Congress's reception of Don Diego de Gardoqui from Spain); Extract from the Secret Journal of Foreign Affairs (Oct. 25, 1783), in 6 DIPLOMATIC CORRESPONDENCE, supra note 182, at 420, 420-21, 714 (documenting passage of a resolution that P.J. Van Berckel "be received as Minister Plenipotentiary from their High Mightiness the States General of the United Netherlands, and that agreeably to his request he be admitted to a public audience in Congress").

(184.) See, e.g., 30 JOURNALS OF THE CONTINENTAL CONGRESS, supra note 181, at 323 (John C. Fitzpatrick ed., 1934) (seeking instructions on how to proceed on negotiations with Spain); 22 id. at 46-54 (Gaillard Hunt ed., 1914) (instructing American diplomats to pursue a consular convention with France); Letter from John Jay to John Adams (May 1, 1786), in 4 DIPLOMATIC CORRESPONDENCE, supra note 182, at 431, 431-32 (informing Adams of congressional instructions on negotiations with Great Britain); Letter from Richard Henry Lee to Benjamin Franklin, Minister Plenipotentiary of the United States (Dec. 11, 1784), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 127, 127-28.

(185.) See, e.g., Letter from Elias Boudinot, President of Congress, to the Honorable the Burgomasters and Senate of the Imperial Free City, Hamburg (Nov. 1, 1783), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 67, 67-69; Letter from Elias Boudinot, President of Congress, to His Excellency P.J. Van Berckel (Oct. 24, 1783), in 6 DIPLOMATIC CORRESPONDENCE, supra note 182, at 419, 419; Letter from the Congress of the United States to Louis Sixteenth, King of France and Navarre (Dec. 11, 1784), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 132, 132.

(186.) See, e.g., Letter from the City of Hamburg to Congress (Mar. 29, 1783), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 62, 62-64; Letter from the Emperor of Morocco to the President of Congress (June 28, 1786), in 5 DIPLOMATIC CORRESPONDENCE, supra note 182, at 175, 175-76; Letter from the King of France to the Congress of the United States (Sept. 30, 1787), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 343, 343-44; Letter from the King of Spain to Congress (Sept. 27, 1784), in 6 DIPLOMATIC CORRESPONDENCE, supra note 182, at 66, 66-68.

(187.) See, e.g., Letter from Virginia Delegates to Bernardo de Galvez (May 4, 1783), in 20 LETTERS OF DELEGATES TO CONGRESS, supra note 183, at 226, 226 (1993); see also JACK RAKOVE, REVOLUTIONARIES 260-61 (2010) (explaining that the French diplomat Conrad Gerard "was an active force in congressional politics, wining and dining delegates and courting their support" and that he "regularly received delegates wishing to 'speak confidentially about present affairs'").

(188.) See, e.g., Letter from John Jay to Thomas Jefferson (Apr. 25, 1787), in 3 DIPLOMATIC CORRESPONDENCE, supra note 182, at 224, 224; Letter from John Jay to Thomas Jefferson (Dec. 7, 1785), in 2 DIPLOMATIC CORRESPONDENCE, supra note 182, at 385, 385.

(189.) See, e.g., Letter from Monsieur Otto to John Jay (June 27, 1786), in 1 DIPLOMATIC CORRESPONDENCE, supra note 182, at 328, 328-29 (complaining about delays on behalf of the French Government).

(190.) See, e.g., ARTICLES OF CONFEDERATION OF 1787 (showing signatures of forty-eight delegates); List of Delegates to Congress, 26 LETTERS OF DELEGATES TO CONGRESS, supra note 183, at v--xlvii (Ronald M. Gephart & Paul H. Smith eds., 2000) (listing 435 delegates elected to Congress between 1774 and 1789).

(191.) Report of Thomas Story to the Committee of Secret Correspondence and the Committee's Memorandum upon It (Oct. 1, 1776) [hereinafter Report of Thomas Story], in 22 THE PAPERS OF BENJAMIN FRANKLIN 636 (1982), available at http://www.franklinpapers .org/franklin/framedVolumes.jsp ("We find by Fatal Experience the Congress Consists of too many Members to keep Secrets....").

(192.) Letter from John Jay to Thomas Jefferson (Apr. 25, 1787), in 3 DIPLOMATIC CORRESPONDENCE, supra note 182, at 224, 224; see also Letter from Jonathan Arnold to William Greene (Jan. 8, 1783), in 19 LETTERS OF DELEGATES TO CONGRESS, supra note 183, at 559, 560-62 (Paul H. Smith ed., 1992) (disclosing Congress's discussions about secret diplomatic communications from Europe); Letter from James Madison to Edmund Randolph (Oct. 8, 1782), in 19 LETTERS OF DELEGATES TO CONGRESS, supra note 183, at 238, 239 (complaining about some delegates' failure to adhere to vows of secrecy).

(193.) Franklin cited the Continental Congress's inability to maintain secrecy as the basis for declining to inform the Congress of an offer of financial support from France during the Revolutionary War. Report of Thomas Story, supra note 191.

(194.) 19 JOURNALS OF THE CONTINENTAL CONGRESS, supra note 181, at 42-44 (Gaillard Hunt ed., 1912).

(195.) Franklin was the only delegate at the Convention with diplomatic experience, having served as a colonial agent in London prior to the Revolutionary War and as a diplomat in France from 1776 to 1785. Jonathan R. Dull, Franklin the Diplomat: The French Mission, 72 TRANSACTIONS AM. PHIL. SOC'Y, no. 1, 1982, at 1 (describing Franklin's diplomatic work in England and France). Forty delegates, however, had served in one of the Continental Congresses or the Congress of the Confederation; only fifteen delegates had no such experience. Compare America's Founding Fathers: Delegates to the Constitutional Convention, NAT'L ARCHIVES, http://www.archives.gov/exhibits/charters/constitution_founding-fathers-html (last visited Aug. 28, 2013), with List of Delegates to Congress, supra note 190 (listing delegates to the Continental Congresses and the Congress of the Confederation).

(196.) Toward the end of the Convention on September 7, Roger Sherman objected to a motion from James Wilson to subject the president's treaty-making power to the advice and consent of both chambers on the view that "the necessity of secrecy in the case of treaties forbade a reference of them to the whole Legislature." 2 FARRAND'S RECORDS, supra note 180, at 538. Apparently persuaded, delegates voted against Wilson's motion by a margin of ten to one. Id.

(197.) The draft produced by the Committee of Detail on August 6, for example, allotted to the president the power to "receive Ambassadors" and "be commander in chief" but otherwise gave to Congress the major diplomacy powers of making treaties and appointing ambassadors. Id. at 183, 185. A draft of the Pinckney Plan gave the Senate "sole & exclusive power to declare War & to make treaties & to appoint Ambassadors & other Ministers to Foreign nations." 3 id. at 599. Delegates also made statements suggesting a dominant Senate role. See, e.g., 1 id. at 426 (statement by James Wilson, explaining that the Senate would "probably be the depository of the powers" relating to treaties); 2 id. at 235 (statement by Charles Pinckney, arguing that a longer prerequisite term of citizenship is necessary for senators because the "Senate is to have the power of making treaties & managing our foreign affairs").

(198.) 2 id. at 392-94, 495.

(199.) THE FEDERALIST, supra note 180, No. 75, at 419-20 (Alexander Hamilton).

(200.) Id. at 451; see also The Debates in the Convention of the State of New York, in 2 THE DEBATES IN THE SEVERAL STATE CONVENTIONS ON THE ADOPTION OF THE FEDERAL CONSTITUTION 205, 302 (Phila., J.B. Lippincott Co. photo, reprint 1937) (Jonathan Elliot ed., 2d ed. 1836) [hereinafter ELLIOT'S DEBATES] ("That branch of administration, especially, which involves our political relation with foreign states, a community will ever be incompetent to." (Alexander Hamilton)).

(201.) The Debates in the Convention of the State of New York, supra note 200, at 291 ("It is not contended that six years are too long a time for the senators to remain in office. Indeed, this cannot be objected to, when the purposes for which this body is instituted are considered. They are to form treaties with foreign nations. This requires a comprehensive knowledge of foreign politics, and an extensive acquaintance with characters, whom, in this capacity, they have to negotiate with, together with such an intimate conception of our best interests, relative to foreign powers, as can only be derived from much experience in this business." (Robert R. Livingston)).

(202.) See The Debates in the Convention of the State of Pennsylvania, in 2 ELLIOT'S DEBATES, supra note 200, at 415, 506 (statement by James Wilson, arguing that the secrecy that may be necessary for treaty negotiations weighs "against committing the knowledge of these transactions to too many persons" and that the length of treaty negotiations may require that they occur when the legislature is not in session); The Debates in the Convention of the Commonwealth of Virginia, in 3 ELLIOT'S DEBATES, supra note 200, at 1, 509 ("The [House of Representatives is] excluded from interposing in making treaties, because large popular assemblies are very improper to transact such business, from the impossibility of their acting with sufficient secrecy, despatch, and decision, which can only be found in small bodies, and because such numerous bodies are ever subject to factions and party animosities." (Francis Corbin)); 3 FARRAND'S RECORDS, supra note 180, at 251 ("Some members [of the Constitutional Convention] were for vesting the power for making treaties in the legislature; but the secrecy and despatch which are so frequently necessary in negotiations evinced the impropriety of vesting it there." (Charles Pinckney)); id. at 348 ("The power of making treaties has, in all countries and governments, been placed in the executive departments. This has not only been grounded on the necessity and reason arising from that degree of secrecy, design, and despatch, which is always necessary in negotiations between nations, but to prevent their being impeded, or carried into effect, by the violence, animosity, and heat of parties, which too often infect numerous bodies." (William Davie)).

(203.) See supra notes 193-194.

(204.) See supra note 199.

(205.) See supra note 200.

(206.) See supra note 202.

(207.) See supra text accompanying note 200.

(208.) See supra Section I.A.1.

(209.) See, e.g., Letter from George Beckwith to William Samuel Johnson (Oct. 1, 1790), in 20 DOCUMENTARY HISTORY OF THE FIRST FEDERAL CONGRESS OF THE UNITED STATES OF AMERICA, 4 MARCH 1789-3 MARCH 1791, at 2531 (Charlene Bangs Bickford et al. eds., 2012) [hereinafter DOCUMENTARY HISTORY] (acknowledging a gift of cheese from Senator Johnson's wife); Letter from Pierce Butler to Don Diego de Gardoqui (Feb. 17, 1791), in THE LETTERS OF PIERCE BUTLER, 1790-1794, at 101, 101 (Terry W. Lipscomb ed., 2007) [hereinafter LETTERS OF PIERCE BUTLER] (discussing Senator Butler's title to an island in East Florida); Letter from Pierce Butler to Don Diego de Gardoqui (Sept. 30, 1791), in LETTERS OF PIERCE BUTLER, supra, at 132, 132-33 (same).

(210.) See, e.g., Letter from Elias Boudinot to Hannah Boudinot (May 15, 1789), in 15 DOCUMENTARY HISTORY, supra note 209, at 557-58 (explaining that the Count de Moustiers, French minister to the United States, had held a ball featuring dancing "in a very curious Manner" and "Shelves filled with Cakes, Oranges, Apples, Wines of All Sorts [and] Ice Creams"); Letter from Alexander White to Mary Wood (May 20, 1789), in 15 DOCUMENTARY HISTORY, supra note 209, at 601-02 (stating that White was also in attendance); Letter from Henry Wynkoop to Reading Beatty (May 15, 1789), in 15 DOCUMENTARY HISTORY, supra note 209, at 560-61 (stating that Wynkoop was also in attendance); Letter from John Temple to Marquis de Carmarthen (May 17, 1789), in 15 DOCUMENTARY HISTORY, supra note 209, at 584 (stating that the French and Spanish Ministers entertained members of Congress); Dinner List (June 30, 1790), in 19 DOCUMENTARY HISTORY, supra note 209, at 1978 (listing Dutch minister Franco Van Berckel; French minister Louis Guillaume Otto; Spanish Charge d'Affaires Jose Ignacio Viar; and Congressmen Ralph Izard, Pierce Butler, and William L. Smith as dinner guests).

(211.) Letter from Louis Gauillaume Otto to Comte de Montmorin (Feb. 25, 1790), in 18 DOCUMENTARY HISTORY, supra note 209, at 629-32.

(212.) See Conversation Between George Beckwith and Senator William S. Johnson (undated 1789), in 17 DOCUMENTARY HISTORY, supra note 209, at 1723-25; Conversation Between George Beckwith and Senator Philip Schuyler (undated 1789), in 17 DOCUMENTARY HISTORY, supra note 209, at 1725-26; Conversations Between George Beckwith and Other Persons (undated April 1790), in 19 DOCUMENTARY HISTORY, supra note 209, at 1380-88 (conversations with Senator William S. Johnson, Senator William Paterson, and Rep. Thomas Scott); Conversations Between George Beckwith and Different Persons (undated Aug. 1790), in 20 DOCUMENTARY HISTORY, supra note 209, at 2469-72 (conversations with Rep. Fisher Ames, Senator Richard Henry Lee, and Rep. Thomas Scott). For a discussion of Beckwith's role and contacts with legislators, see Frank T. Reuter, "Petty Spy" or Effective Diplomat: The Role of George Beckwith, 10 J. EARLY REPUBLIC 471, 481-86 (1990).

(213.) Letter from Pierce Butler to Don Diego de Gardoqui (Feb. 17, 1791), in THE LETTERS OF PIERCE BUTLER, supra note 209, at 101.

(214.) Letter from Pierce Butler to Antoine de la Forest (Mar. 26, 1790), in THE LETTERS OF PIERCE BUTLER, 1790-1794, supra note 209, at 20.

(215.) Michael F. Conlin, The American Mission of Citizen Pierre-Auguste Adet: Revolutionary Chemistry and Diplomacy in the Early Republic, 124 PA. MAC. HIST. & BIOGRAPHY 489, 492-95, 507 (2000).

(216.) 2 CORRESPONDENCE OF THE FRENCH MINISTERS TO THE UNITED STATES, 1791-1797, at 894-96, 1001-02, 1080 (Frederick Jackson Turner ed., 1904) (describing contacts between French officials and members of Congress in 1796 and 1797).

(217.) See, e.g., DOCUMENTS RELATING TO NEw-ENGLAND FEDERALISM, 1800-1815, at 366-73, 387 (Henry Adams ed., Bos., Little, Brown, & Co. 1877) (compiling correspondence from the early 1800s between Senator Timothy Pickering and G.H. Rose, a British envoy in Washington, regarding official business); ROGER H. BROWN, THE REPUBLIC IN PERIL: 1812, at 96 (1971) (explaining that shortly before the War of 1812, certain Federalist legislators communicated secretly with British officials to encourage Britain to maintain the Orders in Council).

(218.) Logan Act, ch. 1, 1 Stat. 613 (1799) (codified as amended at 18 U.S.C. [section] 953 (2012)).

(219.) 9 ANNALS OF CONG. 2488-89 (1798); see also Logan Act, ch. 1, 1 Stat. at 613.

(220.) See 9 ANNALS OF CONG. 2495 (1798) (statement by Rep. Nicholas); id. at 2498, 2639 (statements by Rep. Gallatin); id. at 2618 (statement by Rep. Harper); id. at 2677 (statement by Rep. Parker).

(221.) 7 ANNALS OF CONG. 10 (1797).

(222.) See GEOFFREY R. STONE, PERILOUS TIMES 29-41 (2004) (recounting congressional debates over the Acts).

(223.) Only seven members of the fifth Congress had been delegates to the Convention. Compare America's Founding Fathers: Delegates to the Constitutional Convention, NAT'L ARCHIVES, http://www.archives.gov/exhibits/charters/constitution_founding_fathers.html (last visited Aug. 28, 2013) (listing Abraham Baldwin, John Langdon, Jonathan Dayton, William Blount, Richard Dobbs Spaight, Alexander Martin, and Charles Cotesworth Pinckney as delegates), with THE UNITED STATES CONGRESSIONAL DIRECTORIES, 1789-1840, at 25-34 (Perry M. Goldman & James S. Young eds., 1973) (listing the same individuals as legislators).

(224.) See 9 ANNALS OF CONG. 2494 (1798) (statement by Rep. Griswold); id. at 2501-02 (statement by Rep. Pinckney); id. at 2545 (statement by Rep. Nathaniel Smith); id. at 2589 (statement by Rep. Josiah Parker); id. at 2637 (statement by Rep. Gallatin). But see id. at 2525-26 (statement by Rep. Otis) ("It is not merely the particular correspondence, but the illegal and dangerous tendency of any correspondence with our enemies, and the abuses to which it is liable, which requires attention.").

(225.) Id. at 2499; see also id. at 2497 (statement by Rep. Gallatin); id. at 2605 (statement by Rep. Robert Williams).

(226.) See supra notes 112-117 and accompanying text (discussing the historical absence of Logan Act prosecutions against federal legislators).

(227.) No. 58: France, in 1 AMERICAN STATE PAPERS 133, 133 (Walter Lowrie & Matthew St. Clair Clarke eds., 1833).

(228.) H. JOURNAL, 2d Cong., 1st Sess. 532 (1792) (requesting that the president communicate a message to the king of France).

(229.) S. JOURNAL, 2d Cong., 1st Sess. 408 (1792).

(230.) Letter from Thomas Jefferson to George Washington (Mar. 13, 1792), in 23 THE PAPERS OF THOMAS JEFFERSON 277 (Charles T. Cullen ed., 1990).

(231.) Letter from George Washington to Louis XVI (Mar. 14, 1792), in 23 THE PAPERS OF THOMAS JEFFERSON, supra note 230, at 281. It appears that Washington would have opposed transmittal of the resolutions if they had purported to speak on behalf of the United States. See Thomas Jefferson, The Anas, in 1 THE WORKS OF THOMAS JEFFERSON 163, 211-12 (Paul Leicester Ford ed., 1904) (entry of Mar. 12, 1792).

(232.) No. 92: France, in 1 AMERICAN STATE PAPERS, supra note 227, at 447, 447-48.

(233.) S. JOURNAL, 3d Cong., 1st Sess. 68 (1794).

(234.) H. JOURNAL, 3d Cong., 1st Sess. 132 (1794).

(235.) 2 THE WRITINGS OF JAMES MONROE, 1794-1796, at 13-15 (Stanislaus Murray Hamilton ed., New York, G.P. Putnam's Sons 1899).

(236.) No. 108: France, in 1 AMERICAN STATE PAPERS, supra note 227, at 527, 527.

(237.) Id.

(238.) 5 ANNALS OF CONG. 28-29 (1796).

(239.) Id. at 36.

(240.) Id. at 30-31.

(241.) Id. at 32.

(242.) Id. at 32-35.

(243.) Supra notes 231,235 and accompanying text.

(244.) E.g., S. JOURNAL, 1st Cong., 3d Sess. 279, 281,295 (1791) (approving a resolution "requesting the President ... to cause a communication to be made to the National Assembly of France, respecting the late Benjamin Franklin").

(245.) See, e.g., Thomas Jefferson, Memoranda of Consultations with the President (Mar. 12, 1792), in 19 THE PAVERS OF THOMAS JEFFERSON, supra note 230, at 260-61 (Charles T. Cullen ed., 1990) (stating that when Congress desires to correspond with a foreign nation, it "shd. pass [its] sentiments thro' the President" rather than engage in a "direct communication"); Letter from Thomas Jefferson to William Short (Mar. 8, 1791), in 19 THE PAVERS OF THOMAS JEFFERSON, supra note 230, at 424, 425 (Julian P. Boyd ed., 1974) ("Let it be understood that Congress can only correspond through the Executive, whose organ in the case of foreign nations is the Secretary of State."); Jefferson's Opinion on the Powers of the Senate Respecting Diplomatic Appointments (Apr. 24, 1790), in 16 THE PAVERS OF THOMAS JEFFERSON, supra note 230, at 378, 378-82 (Julian P. Boyd ed., 1961) ("The transaction of business with foreign nations is Executive altogether. It belongs then to the head of that department, except as to such portions of it as are specially submitted to the Senate. Exceptions are to be construed strictly.").

(246.) See, e.g., RAMSEY, supra note 2, at 75-79 (making this argument).

(247.) See supra notes 209-217 and accompanying text.

(248.) See Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579, 610-11 (1952) (Frankfurter, J., concurring) ("[A] systematic, unbroken, executive practice, long pursued to the knowledge of the Congress and never before questioned, engaged in by Presidents who have also sworn to uphold the Constitution ... may be treated as a gloss on 'executive Power' vested in the President by [section] 1 of Art. II.").

(249.) See supra Part I.

(250.) Haiti: CODEL Conyers Meets President, Prime Minister, supra note 54.

(251.) Sanger, supra note 54. For other examples, see sources cited supra note 54. See also David D. Kirkpatrick, 2 Senators Visit Egypt with Threat on U.S. Aid, N.Y. TIMES, Aug. 7, 2013, at A4, available at http://www.nytimes.com/2013/08/07/world/middleeast/2-senators-visit-egypt-with-threat-on-us- aid.html?_r=0 (describing a visit to Egypt by Senators John McCain and Lindsey Graham, who, "at the request of President Obama," threatened that the United States "would cut off aid if the new military-appointed government failed to move rapidly toward democracy").

(252.) For limited academic treatment, see Gary Lawson, Delegation and Original Meaning, 88 VA. L. REV. 327, 351-52 (2002) ("[A]ll execution of federal law must ultimately be controlled by the President...."); Eric A. Posner & Adrian Vermeule, Nondelegation: A Post-mortem, 70 U. CHI. L. REV. 1331, 1335 (2003) (arguing that advocates of the traditional nondelegation doctrine "ought to subscribe to a parallel Article II nondelegation doctrine, under which the President must provide an 'intelligible principle' sufficient to guide the legal discretion of subordinate executive officers"); and Saikrishna B. Prakash, Fragmented Features of the Constitution's Unitary Executive, 45 WILLAMETTE L. REV. 701, 719-20 (2009) ("[T]he President lacks the power to delegate authority to some constitutionally created office.").

(253.) J.W. Hampton, Jr., & Co. v. United States, 276 U.S. 394, 409 (1928).

(254.) U.S. CONST. art. II, [section] 1.

(255.) Whitman v. Am. Trucking Assocs., 531 U.S. 457, 489 (2001) (Stevens, J., concurring in part and concurring in the judgment) ("In Article I, the Framers vested 'All legislative Powers' in the Congress, just as in Article II they vested the 'executive Power' in the President. Those provisions do not purport to limit the authority of either recipient of power to delegate authority to others." (citations omitted)).

(256.) U.S. CONST. art. I, [section] 1.

(257.) U.S. CONST. art. II, [section] 2.

(258.) Tuan Samahon, The Czar's Place in Presidential Administration, and What the Excepting Clause Teaches Us About Delegation, 2011 U. CHI. LEGAL F. 169, 179-81 (arguing in favor of an executive power to delegate to other executive officers). The Subdelegation Act authorizes the president "to designate and empower the head of any department or agency in the executive branch, or any official thereof who is required to be appointed by and with the advice and consent of the Senate, to perform without approval, ratification, or other action by the President ... any function which is vested in the President by law." 3 U.S.C. [section] 301 (2012). The Act, however, "was intended only to authorize the delegation of functions vested in the President by statute." Waiver of Claims for Damages Arising out of Cooperative Space Activity, 19 Op. O.L.C. 140, 155 (1995). As a result, it does not imply the absence of an independent executive power of vertical delegation.

(259.) See Hamdi v. Rumsfeld, 542 U.S. 507, 580-81 (2004) (Thomas, J., dissenting) (stating that "the structural advantages of a unitary Executive are essential" in the domains of national security and foreign relations).

(260.) Clinton v. Jones, 520 U.S. 681, 713 (1997) (Breyer, J., concurring in the judgment).

(261.) See Printz v. United States, 521 U.S. 898, 922-23 (1997) (holding that provisions of the Brady Act that transferred executive law-enforcement power to state officers "who [we]re left to implement the program without meaningful Presidential control" violated the principle of the unitary executive); Buckley v. Valeo, 424 U.S. 1, 140-41 (1976) (per curiam) (invalidating statutory provisions that gave law-execution power to the Federal Election Commission because some of the commission members were not executive officers).

(262.) E.g., John C. Yoo, Response Essay, Rejoinder: Treaty Interpretation and the False Sirens of Delegation, 90 CALIF. L. REV. 1305, 1332 (2002) ("As far as I know, there is no example where any branch has successfully delegated part of the executive power to another branch of government and, certainly, no example where such power was delegated to the judicial branch. Delegations, when they occur, run in only one direction, from Congress to either the executive branch or, in limited circumstances, to the courts.").

(263.) See supra notes 103-110 and accompanying text (documenting the historical executive practice of using sitting members of Congress to conduct diplomacy).

(264.) Leonard Dinnerstein, Joseph Rucker Lamar, in 3 THE JUSTICES OF THE UNITED STATES SUPREME COURT 978, 993 (Leon Friedman & Fred L. Israel eds., rev. ed. 1997); Why Lamar and Lehmann Were Made Peace Delegates, N.Y. TIMES, May 24, 1914, at 44.

(265.) Exec. Order No. 8,983, 3 C.F.R. 321 (Supp. 1941).

(266.) Exec. Order No. 9,547, 3 C.F.R. 64 (Supp. 1945); see also Lewis Wood, Jackson Will Head War Crime Counsel, N.Y. TIMES, May 3, 1945, at 9.

(267.) See, e.g., RECORDS OF THE AMERICAN COMMISSION FOR THE PROTECTION AND SALVAGE OF ARTISTIC AND HISTORIC MONUMENTS IN WAR AREAS (THE ROBERTS COMMISSION), 1943-1946, at 1-3 (2007), available at http://www.archives.gov/research/microfilm/m1944.pdf (describing President Roosevelt's creation of the Roberts Commission and Justice Owen Roberts's position as chair); Alpheus Thomas Mason, William Howard Taft, in 3 THE JUSTICES OF THE UNITED STATES SUPREME COURT, supra note 264, at 1049, 1059 ("[Justice] Taft went on a confidential mission, approved by Secretary of State Hughes, to 'see if the League of Nations could not so modify the statute establishing the Court as the United States might become a participant in respect to the Court, without assuming any of the obligations of the League.'"). For further discussion on this topic, see generally Wendy E. Ackerman, Comment, Separation of Powers and Judicial Service on Presidential Commissions, 53 U. CHI. L. REV. 993 (1986) (arguing that judicial service on presidential commissions can be constitutional only if it does not impair the judiciary's function or expand judicial power).

(268.) Issues Raised by Foreign Relations Authorization Bill, supra note 148, at 37.

(269.) See Paul R. Verkuil, Public Law Limitations on Privatization of Government Functions, 84 N.C.L. REV. 397, 441 (2006) (describing the privatization of military functions); see also Harold J. Krent, Fragmenting the Unitary Executive: Congressional Delegations of Administrative Authority Outside the Federal Government, 85 Nw. U. L. REV. 62, 67 (1990) ("Congress has, for instance, directed private individuals to exercise administrative authority by serving in and working with government agencies, authorized private groups targeted for federal regulation to participate in determining both the content and applicability of binding federal regulations, and authorized individuals, even in the absence of personal injury, to sue to enforce federal laws."); Gillian E. Metzger, Privatization as Delegation, 103 COLUM. L. REV. 1367, 1437-41 (2003) (explaining that historical limits on delegations to private citizens are "all but dead in practice").

(270.) See Daniel Bergner, The Other Army, N.Y. TIMES, Aug. 14, 2005 (Magazine), at E28, available at http://www.nytimes.com/2005/08/14/magazine/14PRIVATI.html?pagewanted =all (reporting on the role of private security firms in Iraq).

(271.) Thomas W. Merrill, Rethinking Article I, Section 1: From Nondelegation to Exclusive Delegation, 104 COLUM. L. REV. 2097, 2109 (2004) ("[A]s far as the Supreme Court is concerned, the nondelegation doctrine imposes no effective constraint on congressional legislation. Indeed, the Court's most recent decision applying the doctrine reveals that some Justices have come to question the doctrine, and respected academic commentators are openly arguing that it be abandoned.").

(272.) See id. at 2105.

(273.) See, e.g., id. at 2181.

(274.) Lawson, supra note 252, at 336-37.

(275.) See Prakash & Ramsey, Executive Power, supra note 145 (making this argument).

(276.) U.S. CONST. art. I, [section] 1.

(277.) Compare, e.g., Saikrishna Prakash, Unleashing the Dogs of War: What the Constitution Means by "Declare War", 93 CORNELL L. REV. 45, 48-50 (2007) (arguing that the Clause empowers Congress to decide whether and how the nation will wage war), with John Yoo, The Continuation of Politics by Other Means: The Original Understanding of War Powers, 84 CALIF. L. REV. 167, 171-74 (1996) (rejecting that argument).

(278.) Prakash, supra note 277, at 48-50; Yoo, supra note 277, at 242.

(279.) U.S. CONST. art. II, [section] 2, cl. 2; id. [section] 3.

(280.) 273 U.S. 135, 173 (1927).

(281.) McGrain, 273 U.S. at 174-75.

(282.) 354 u.s. 178, 187 (1957).

(283.) Watkins, 354 U.S. at 187; see also Wilkinson v. United States, 365 U.S. 399, 409 (1961) (addressing whether a subcommittee acted in pursuit of a "valid legislative purpose" and whether its question for a witness was "pertinent to the subject matter of the investigation"); Barenblatt v. United States, 360 U.S. 109, 111 (1959) ("The scope of the power of inquiry ... is as penetrating and far-reaching as the potential power to enact and appropriate under the Constitution."); McGrain, 273 U.S. at 176-78 (evaluating "whether it sufficiently appears that the purpose for which the witness's testimony was sought was to obtain information in aid of the legislative function"); Kilbourn v. Thompson, 103 U.S. 168, 194-95 (1880) (holding that the House of Representatives exceeded its power in directing one of its committees to make an investigation that "could result in no valid legislation on the subject to which the inquiry referred").

(284.) U.S. CONST. art. I, [section] 9, cl. 8.

(285.) Zephyr Teachout, Gifts, Offices, and Corruption, 107 Nw. U. L. REV. COLLOQUY 30, 33-34 (2012), available at http://www.law.northwestern.edu/lawreview/Colloquy/2012/9/LR Col12012n9Teachout.pdf.

(286.) Compare id. at 47-48 (arguing that the Foreign Emoluments Clause applies to elected federal officials such as legislators), with Seth Barrett Tillman, Citizens United and the Scope of Professor Teachout's Anti-Corruption Principle, 107 Nw. U. L. REV. COLLOQUY 1, 11-17 (2012), available at http://www.law.northwestern.edu/lawreview/Colloquy/2012/7/LRCol12012 n7Tillman.pdf (arguing that the Clause does not apply to federal legislators).

(287.) See generally MORTON ROSENBERG, CONG. RESEARCH SERV., 95-464, INVESTIGATIVE OVERSIGHT: AN INTRODUCTION TO THE LAW, PRACTICE AND PROCEDURE OF CONGRESSIONAL INQUIRY (1995), available at http://www.fas.org/sgp/crs/misc/95-464.pdf.

(288.) U.S. CONST. art. I, [section] 8, cl. 3.

(289.) See Hans Kelsen, The Principle of Sovereign Equality of States as a Basis for International Organization, 53 YALE L.J. 207, 209 (1944) (explaining the international legal principle of sovereign state equality, which establishes in part that "no State has jurisdiction over another State ... without the latter's consent").

(290.) See, e.g., Gillars v. United States, 182 F.2d 962, 978 (D.C. Cir. 1950) ("Aliens who are inhabitants of a foreign country cannot be compelled to respond to a subpoena. They owe no allegiance to the United States." (quoting United States v. Best, 76 F. Supp. 138, 139 (D. Mass. 1948))); Gary E. Davidson, Congressional Extraterritorial Investigative Powers: Real or Illusory?, 8 EMORY INT'L L. REV. 99, 104-05 (1994) (discussing limits on the ability of Congress to subpoena aliens residing overseas).

(291.) See, e.g., Michele Keleman, A New Obstacle to Normal Relations for Sudan, U.S., NPR (Aug. 23, 2011, 4:57 PM), http://www.npr.org/2011/08/23/139882484/a-new-obstacle-tonormal-relations-for-sudan-u-s (discussing the troubled relationship between the United States and Sudan).

(292.) See supra notes 55-59 and accompanying text.

(293.) U.S. CONST. art. I, [section] 8, cl. 10.

(294.) See generally Oona A. Hathaway, Treaties' End: The Past, Present, and Future of International Lawmaking in the United States, 117 YaLE L.J. 1236, 1248-71 (2008) (describing the modern uses of congressional-executive agreements and Article II treaties).

(295.) U.S. CONST. art. I, [section] 9, cl. 7.

(296.) At least on occasion, Congress can reportedly "call upon the State Department to use diplomatic channels to generate information from abroad for congressional investigations." Davidson, supra note 290, at 101.

(297.) See, e.g., Tea with Mugabe: CODEL Payne's Marathon Meeting at State House, WIKILEAKS (June 2, 2009), http://wikileaks.org/cable/2009/06/09HARARE456.html.

(298.) See Davidson, supra note 290, at 104 (citing a U.S. Senate investigator in explaining that "unwillingness on the part of the Executive to assist in obtaining information" can be a "significant impediment[] to congressional factfinding efforts"):

(299.) See supra notes 280-283 and accompanying text.

(300.) Article I does, however, implicitly ascribe certain individual powers to legislators. Members of Congress routinely vote, engage in floor debates, and participate in committee investigations. Congress could not function without these activities, and it is for this reason that Article I expressly protects legislators from arrest during their attendance and from "question[ing]" for "any Speech or Debate in either House." U.S. CONST. art. I, [section] 6, cl. 1; see also Gravel v. United States, 408 U.S. 606, 618 (1972) (explaining that the "fundamental purpose" of the Speech or Debate Clause is "freeing the legislator from executive and judicial oversight that realistically threatens to control his conduct as a legislator"); Powell v. McCormack, 395 U.S. 486, 502 (1969) (interpreting the Clause broadly to protect "things generally done in a session of [Congress] by one of its members in relation to the business before it," including committee reports, resolutions, and the act of voting (quoting Kilbourn v. Thompson, 103 U.S. 168, 204 (1880)) (internal quotation marks omitted)). Moreover, the official capacity to carry out these acts is not available generally. It does not accompany mere citizenship or other types of federal office; it is unique to the offices of senator and representative. And that capacity could not be the product of federal legislation founded on the Necessary and Proper Clause--legislators would have to possess a preexisting power to investigate, debate, and vote on legislation granting themselves the authority to engage in these acts. It follows that the power to engage in these acts comes from the Constitution itself. Cf. Eric A. Posner & Adrian Vermeule, Interring the Nondelegation Doctrine, 69 U. CHI. L. REV. 1721, 1756 (2002) ("The power to vote on bills is possessed by individual members of Congress, not by the Congress as such...."). But the only limits on the exercise of individual powers are impeachment and the desire for reelection.

(301.) U.S. CONST. art. I, [section] 1; see also Larry Alexander & Saikrishna Prakash, Reports of the Nondelegation Doctrine's Death Are Greatly Exaggerated, 70 U. CHI. L. REV. 1297, 1308 (2003) ("[I]ndividual members of Congress do not have any 'legislative powers' [within the meaning of the Article I Vesting Clause]--only Congress does.").

(302.) By contrast, Article III vests the full judicial power of the United States in "one supreme court, and in such inferior Courts as the Congress may from time to time ordain and establish," thus making available Article III power to each federal court. U.S. CONST. art. III, [section] 1; see also Amy Coney Barrett, The Supervisory Power of the Supreme Court, 106 COLUM. L. REV. 324, 359 (2006) ("Unlike any single Article III court, no one member of Congress can, acting alone, exercise the power of her department. Instead, members of Congress can exercise legislative power only when acting in concert with each other (and the President).").

(303.) But see U.S. CONST. art. I, [section] 6, cl. 2 (prohibiting members of the House and Senate from holding "any Office under the United States").

(304.) 22 U.S.C. [section] 1754(b)(1) (2006) (making foreign currency available to members of Congress for foreign travel).

(305.) See supra notes 132-134.

(306.) See 22 U.S.C. [section] 1754(b)(1)(B).

(307.) See Foreign Leaders and Dignitaries Who Have Addressed the U.S. Congress: Fast Facts, supra note 91.

(308.) See supra notes 53-54 and accompanying text.

(309.) Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579, 610-11 (1952) (Frankfurter, J., concurring).

(310.) E.g., Medellin v. Texas, 552 U.S. 491, 531 (2008) (quoting Dames & Moore v. Reagan, 453 U.S. 654, 686 (1981) (quoting Youngstown, 343 U.S. at 610-11 (Frankfurter, J., concurring))).

(311.) See Michael J. Glennon, The Use of Custom in Resolving Separation of Powers Disputes, 64 B.U.L. REV. 109, 129-46 (1984) (cataloguing the determinants of custom).

(312.) Cf. Curtis A. Bradley & Trevor W. Morrison, Historical Gloss and the Separation of Powers, 126 HARV. L. REV. 411, 430 (2012) C[T]he role of historical practice is likely to depend on the perceived clarity of other evidence of constitutional meaning. The more an interpreter deems nonpractice evidence like the text and original understanding to be clear ... the more widespread and deeply entrenched the practice must be in order to change the outcome.").

(313.) United States v. Curtiss-Wright Exp. Corp., 299 U.S. 304 (1936).

(314.) Id. at 314-15.

(315.) Id. at 315-16.

(316.) Id. at 316-18.

(317.) Id. at 318.

(318.) See, e.g., RAMSEY, supra note 2, at 17-28 (rejecting the theory of extraconstitutional foreign affairs powers as contrary to constitutional text and original meaning); HENKIN, supra note 1, at 19-20 ("That the new United States government was to have major powers outside the Constitution is not intimated in the Constitution itself, in the records of the Convention, in the Federalist Papers, or in contemporary debates."). See generally Charles A. Lofgren, United States v. Curtiss-Wright Export Corp.: An Historical Reassessment, 83 YALE L.J. 1 (1973) (arguing that historical evidence and judicial precedent suggest the absence of an extraconstitutional source of foreign affairs powers).

(319.) See, e.g., Arizona v. United States, 132 S. Ct. 2492, 2498 (2012) (explaining that the federal government's power over immigration rests in part on "its inherent power as sovereign to control and conduct relations with foreign nations" (citing Curtiss-Wright, 299 U.S. at 318)).

(320.) Rejecting the enumerated powers doctrine does not discount express or implied Article I powers; it means simply that congressional power is not limited by Article I.

(321.) See 143 U.S. 649, 683-91 (1892); see also Twin City Bank v. Nebeker, 167 U.S. 196, 202-03 (1897) (relying in part on the "practical construction" of the Origination Clause to conclude that a bill did not have to originate in the House if it generated revenue merely incidentally); Bradley & Morrison, supra note 312, at 421 ("Although historical practice is most frequently invoked in favor of executive authority, it is also sometimes treated as a source of congressional power.").

(322.) Clark, 143 U.S. at 691.

(323.) 548 U.S. 557, 592 & n.22 (2006); id. at 638 (Kennedy, J., concurring in part) ("In this case, as the Court observes, the President has acted in a field with a history of congressional participation and regulation."); see also, e.g., United States v. Curtiss-Wright Exp. Corp., 299 U.S. 304, 322-29 (1936) (relying in part on "unbroken legislative practice" in rejecting a nondelegation challenge to a joint resolution that had granted the president authority to prohibit certain international arms sales).

(324.) See Alfred C. Aman, Jr., Administrative Law in a Global Era: Progress, Deregulatory Change, and the Rise of the Administrative Presidency, 73 CORNELL L. REV. 1101, 1217 (1988) ("[T]he flexibility of functionalism can favor executive power as well as legislative power ...."). See generally David J. Barton & Martin S. Lederman, The Commander in Chief at the Lowest Ebb--A Constitutional History, 121 HARV. L. REV. 941 (2008) (arguing that historical practices should be taken into account when analyzing legislative and executive powers in the conduct of war).

(325.) Bradley & Morrison, supra note 312, at 432-38.

(326.) Id. at 438-47.

(327.) Id. at 440-44.

(328.) See supra Part II.

(329.) United States v. Curtiss-Wright Exp. Corp., 299 U.S. 304, 319 (1936) (quoting John Marshall, 10 ANNALS OF CONG. 613 (1800)) (internal quotation marks omitted).

(330.) Cf. Ulrich K. Preuss, Equality of States--Its Meaning in a Constitutionalized Global Order, 9 CHI. J. INT'L L. 17, 26 (2008) ("With respect to each single state, sovereignty means independence, including autonomy or self-determination....").

(331.) Curtiss-Wright, 299 U.S. at 319 (emphasis added) (quoting John Marshall, 10 ANNALS OF CONG. 613 (1800)) (internal quotation marks omitted).

(332.) See generally Part I (documenting the contemporary practice).

(333.) See supra notes 32-54 and accompanying text.

(334.) See supra notes 66-72 and accompanying text.

(335.) See supra notes 32-38 and accompanying text.

(336.) See supra note 38.

(337.) See supra note 125.

(338.) See generally Sarah H. Cleveland, Crosby and the "One Voice" Myth in U.S. Foreign Relations, 46 VILL. L. REV. 975 (2001).

(339.) See, e.g., Harold Hongju Koh, Why the President (Almost) Always Wins in Foreign Affairs: Lessons of the Iran-Contra Affair, 97 YALE L.J. 1255, 1291-317 (1988) (explaining how the president came to dominate foreign policymaking); G. Edward White, The Transformation of the Constitutional Regime of Foreign Relations, 85 VA. L. REV. 1, 3 (1999) ("Over the first four decades of the twentieth century, [a traditional] distribution of power was replaced with a vertical and horizontal centralization of foreign relations powers in the Federal Executive.").

(340.) See White, supra note 339, at 77-145.

(341.) See Koh, supra note 339, at 1291-317.

(342.) See Zschernig v. Miller, 389 U.S. 429, 432-33, 440-41 (1968) (quoting Clark v. Allen, 331 U.S. 503, 517 (1947)) (internal quotation marks omitted). But see Am. Ins. Ass'n v. Garamendi, 539 U.S. 396, 419-20 & n.11 (2003) (suggesting a new doctrine that would establish field preemption where states are not acting within their traditional competence and conflict preemption where they are).

(343.) Cf. supra notes 34-38 (documenting CODEL communications on behalf of local constituents).

Ryan M. Scoville, Assistant Professor of Law, Marquette University Law School. Sincere thanks to Bruce Boyden, Louis Fisher, Tom Merrill, David Moore, Michael O'Hear, Chad Oldfather, Glen Staszewski, Irene Ten Care, and Ingrid Wuerth for helpful comments on earlier drafts, and to Margaret Barr, Sam Berg, Nick Hagman, and Katie Linn for research assistance.

TABLE 1. HOUSE COMMITTEE TRAVEL (2009)

Committee                            Total    Trips
                                     Member    per
                                     Trips    Member

Foreign Affairs                       324      6.89
Armed Services                        404      6.62
Intelligence                          134      6.09
Standards of Official Conduct          56      5.60
Education and Labor                   224      4.57
Small Business                        132      4.55
Natural Resources                     215      4.39
Science and Technology                182      4.23
Rules                                  51      3.92
Appropriations                        233      3.88
Oversight and Government Reform       158      3.85
Judiciary                             152      3.71
Veterans' Affairs                     106      3.66
Homeland Security                     118      3.58
Transportation and Infrastructure     255      3.45
Ways and Means                        136      3.32
Agriculture                           151      3.28
Energy and Commerce                   193      3.27
Financial Services                    193      2.72
Budget                                 92      2.35
House Administration                   21      2.33

TABLE 2. SENATE COMMITTEE TRAVEL (2009)

Committee                                  Total    Trips
                                           Member    per
                                           Trips    Member

Foreign Relations                           105      5.53
Armed Services                              119      4.58
Judiciary                                    79      4.16
Homeland Security                            62      3.65
Agriculture, Nutrition, and Forestry         74      3.52
Environment and Public Works                 59      3.11
Commerce, Science, and Transportation        69      2.76
Budget                                       62      2.70
Energy and Natural Resources                 59      2.57
Appropriations                               74      2.47
Health, Education, Labor, and Pensions       55      2.39
Intelligence                                 34      2.27
Finance                                      48      2.09
Banking, Housing, and Urban Affairs          41      1.78
Small Business and Entrepreneurship          32      1.68
Rules and Administration                     29      1.53
Veterans' Affairs                            20      1.33
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Title Annotation:II. Executive Power as a Limiting Principle A. Textual Dimensions 3. Exclusivity through Conclusion, with footnotes and tables, p. 364-395
Author:Scoville, Ryan M.
Publication:Michigan Law Review
Date:Dec 1, 2013
Words:26032
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