with whom Justice Marshall, Justice Blackmun, and Justice Stevens join, concurring in part and concurring in the judgment.
While I agree with the Court that New York and New Jersey consented, on behalf of the Port Authority Trans-Hudson Corporation (PATH), to suit in federal court, I write separately to add that their consent is not necessary to our decision today. I do not join Part II of the Court’s opinion1 because it presupposes the validity of this Court’s current characterization of the Eleventh Amendment as cloaking the States with sovereign immunity unless abrogated by Congress or waived by the States themselves. I adhere to my belief that this doctrine “rests on flawed premises, misguided history, and an untenable vision of the needs of the federal system it purports to protect.” Atascadero State Hospital v. Scanlon, 473 U. S. 234, 248 (1985) (Brennan, J., dissenting); see also Welch v. Texas Dept. of Highways and Public Transp., 483 U. S. 468, 497 (1987) (Brennan, J., dissenting). Nevertheless, under either the Court’s or my own view of the Eleventh Amendment,2 PATH and similarly situated interstate entities may be subjected to suit in federal courts.
*310I
Respondents seek to hold PATH liable under a variety of federal statutes for injuries they have suffered.3 In my view, the States’ consent is irrelevant to these suits for two reasons. First, the Eleventh Amendment secures States only from being haled into federal court by out-of-state or foreign plaintiffs asserting state-law claims, where jurisdiction is based on diversity. The Amendment did not constitutionalize some general notion of state sovereign immunity; it is a jurisdictional provision. Neither States nor Congress may consent to jurisdiction that is not provided and, therefore, the question is not waiver but reach. In my opinion, the Eleventh Amendment does not reach, and therefore does not bar, suits brought under federal-question or admiralty jurisdiction. See Welch, supra, at 504-516 (Brennan, J., dissenting); Papasan v. Allain, 478 U. S. 265, 292-293 (1986) (Brennan, J., concurring in part, concurring in judgment in part, and dissenting in part); Green v. Mansour, 474 U. S. 64, 78-79 (1985) (Brennan, J., dissenting); Atascadero, supra, at 252-302 (Brennan, J., dissenting); see also Pennsylvania v. Union Gas Co., 491 U. S. 1, 23 (1989) (Stevens, J., concurring).
Second, to the extent that States retain a common-law defense of state sovereign immunity, States surrendered that immunity, insofar as challenges under federal statutes are concerned, “‘in the plan of the Convention’”4 when they *311agreed to form a union and granted Congress specifically enumerated powers. See Edelman v. Jordan, 415 U. S. 651, 687 (1974) (Brennan, J., dissenting); Employees v. Missouri Dept. of Public Health and Welfare, 411 U. S. 279, 318-322 (1973) (Brennan, J., dissenting); see also Pennsylvania v. Union Gas Co., supra, at 14 (plurality opinion) (quoting Parden v. Terminal Railway of Alabama Docks Dept., 377 U. S. 184, 191-192 (1964)). Neither the Eleventh Amendment nor the ancient doctrine of sovereign immunity, as I view them, would bar respondents’ suits even had they been brought directly against New York or New Jersey because both suits allege violations of federal statutes. Thus, I would affirm the decisions below on that ground.
II
Even under the Court’s current interpretation of the Eleventh Amendment, however, I do not believe that PATH had any defense to waive. The Eleventh Amendment bars federal jurisdiction only over suits “commenced or prosecuted against one of the United States.” PATH is a subsidiary of the Port Authority of New York and New Jersey (Port Authority) which is a bistate agency created by interstate compact; it is not “one of the United States.” By its terms, then, the Eleventh Amendment would appear to be inapplicable. But this Court has created two very limited exceptions to a literal reading of the phrase “one of the United States,” so that immunity applies: (1) where the entity being sued is so intricately intertwined with the State that it can best be un*312derstood as an “arm of the State”; and (2) where the State, though not a nominal party, is the real party in interest. I believe that no bistate agency falls within the first exception and that no bistate agency falls within the second exception if, like the Port Authority, it is independently and solely liable for any judgments levied against it.5
A
The inherent nature of interstate agencies precludes their being found so intricately intertwined with the State as to constitute an “arm of the State.” The Court developed the “arm-of-the-State” doctrine as a tool for determining which entities created by a State enjoy its Eleventh Amendment protection and which do not. This Court has found that a private suit against a state agency is barred by the Eleventh Amendment. See Alabama v. Pugh, 438 U. S. 781, 782 (1978) (reversing a lower court’s decision to enjoin the State of Alabama and the Alabama Board of Corrections). Nonetheless, this Court has long held that counties and cities are not so integrally related to the State that they are shielded from suit in federal court. In Lincoln County v. Luning, 133 U. S. 529, 530 (1890), the Court held that the Eleventh Amendment does not bar suit against counties in federal court, noting that the “Eleventh Amendment limits the jurisdiction [of the federal courts] only as to suits against a State.” The Court continued: “[W]hile the county is territorially a *313part of the State, yet politically it is also a corporation created by and with such powers as are given to it by the State. In this respect it is a part of the State only in that remote sense in which any city, town, or other municipal corporation may be said to be a part of the State.” Ibid. See also Moor v. County of Alameda, 411 U. S. 693, 721 (1973) (county); Graham v. Folsom, 200 U. S. 248, 255 (1906) (county); Workman v. New York City, 179 U. S. 552, 565-566 (1900) (city); cf. Chicot County v. Sherwood, 148 U. S. 529, 533-534 (1893) (rejecting state legislature’s attempt to insulate county from federal jurisdiction by providing that county could only be sued in county courts).
In Mt. Healthy City Board of Education v. Doyle, 429 U. S. 274, 280 (1977), the Court noted that “[t]he bar of the Eleventh Amendment to suit in federal courts . . . does not extend to counties and similar municipal corporations” and looked to the “nature of the entity created by state law” to determine whether local school boards in Ohio appeared to be more like a county or city or more like an arm of the State. The Court concluded that the school boards’ extensive powers to issue bonds and levy taxes, and their categorization under state law as a form of political subdivision, rendered them “[o]n balance . . . more like a county or city.” Ibid.
The rule to be derived from our cases is that the Eleventh Amendment shields an entity from suit in federal court only when it is so closely tied to the State as to be the direct means by which the State acts, for instance a state agency. In contrast, when a State creates subdivisions and imbues them with a significant measure of autonomy, such as the ability to levy taxes, issue bonds, or own land in their own name, these subdivisions are too separate from the State to be considered its “arms.” This is so even though these political subdivisions exist solely at the whim and behest of their State. See, e. g., ibid; Graham v. Folsom, supra, at 252.
*314Interstate agencies lack even this close link to any one State. While a State has plenary power to create and destroy its political subdivisions, a State enjoys no such hegemony over an interstate agency. To begin with, a State cannot create such an agency at will. In order to do so, it must persuade another State, or several other States, to join it. Moreover, the creation of an interstate agency requires each State to relinquish to one or more sister States a part of its sovereignty. The regulatory powers exercised by an interstate agency are powers no longer inhering in any one compacting State; they are powers shared. Likewise, no one State has complete dominion over property owned, and proprietary activities operated, by such an agency. For instance, in order to achieve the practical advantages of coordinated planning and administration through the Port Authority, New York and New Jersey each has ceded partial control over the regulation and operation of transportation facilities in its own State since 1921 and for the foreseeable future. In order to change the Port Authority’s organization or powers, the legislatures of both States must pass a bill to that effect.
In addition, States may not create an interstate agency without the express approval of Congress; they surrendered their right to do so “in the plan of the Convention” when they accepted the Interstate Compact Clause. The Clause provides:
“No State shall, without the Consent of the Congress, . . . enter into any Agreement or Compact with another State. . . .” U. S. Const., Art. I, § 10, cl. 3.
The Constitution also prohibits States from entering into any “Treaty, Alliance, or Confederation” either with other States or with foreign governments. Art. I, § 10, cl. 1.6 The In*315terstate Compact Clause and the State Treaty Clause ensure that whatever sovereignty a State possesses within its own sphere of authority ends at its political border.7
Thus, it is not within the autonomous power of any State to create and regulate an interstate agency. Each State’s sovereign will is circumscribed by that of the other States in the compact and circumscribed further by the veto power relinquished to Congress in the Constitution. If counties are not “arms” of their States merely because the State conferred a certain autonomy on them — an autonomy it can withdraw at *316will — then an interstate agency, over which none of the compacting States exercises such untrammeled control, cannot be said to be an “arm” of any of them.8
B
Although this Court has held that a suit in which the State, rather than the nominal defendant, is the real party in interest is a suit against “one of the United States” within the meaning of the Eleventh Amendment, a State is the real party in interest generally only when the State is directly liable for a money judgment.9 In Ford Motor Co. v. Department of Treasury of Indiana, 323 U. S. 459, 464 (1945), the Court held that a suit against a state treasury department and the individuals constituting its board for a refund of taxes *317was a suit against the State because “when the action is in essence one for the recovery of money from the state, the state is the real, substantial party in interest and is entitled to invoke its sovereign immunity from suit even though individual officials are nominal defendants.” This Court relied on that decision 30 years later in Edelman v. Jordan, 415 U. S., at 677, in holding that the Eleventh Amendment barred a suit brought in federal court in which the nominal defendants were Illinois officials because the relief sought was an injunction ordering retroactive payments of benefits from the state treasury. The Court observed that “the rule has evolved that a suit [in federal court] by private parties seeking to impose a liability which must be paid from public funds in the state treasury is barred by the Eleventh Amendment.” Id., at 663. See also Kennecott Copper Corp. v. State Tax Comm’n, 327 U. S. 573 (1946) (tax refund); Great Northern Life Ins. Co. v. Read, 322 U. S. 47 (1944) (tax refund); Smith v. Reeves, 178 U. S. 436 (1900) (tax refund); see generally Osborne v. Bank of United States, 9 Wheat. 738 (1824) (rejecting an Eleventh Amendment defense because the nominal defendant, not the State, was the real party in interest).10
*318Conversely, when a State is not liable for the obligations of an interstate agency, it is not a real party in interest in a suit against that agency. The court below found that no State is hable for PATH’S obligations. It concluded:
“We believe it clear that a judgment against PATH would not be enforceable against either New York or New Jersey. The Port Authority is explicitly barred from pledging the credit of either state or from borrowing money in any name but its own. Even the provision [permitting] the appropriation of moneys for administrative expenses up to $100,000 per year requires prior approval by the governor of each state and an actual appropriation [by the legislature] before obligations for such expenses may be incurred. Moreover, the [provision’s] phrase ‘salaries, office and other adminstrative expenses’ clearly limits this essentially optional obligation of the two states to a very narrow category of expenses and thus also evidences an intent to insulate the states’ treasuries from the vast bulk of the Port Authority’s operating and capital expenses, including personal injury judgments. No provision commits the treasuries of the two states to satisfy judgments against the Port Authority.” 873 F. 2d 628, 631 (CA2 1989).
Therefore neither New York nor New Jersey is a real party in interest in respondents’ suits, as this Court has understood and applied the concept in the Eleventh Amendment area.
C
This is not to say that the only restriction on whether an interstate agency can be sued in federal court is the Eleventh *319Amendment. Congress may provide an interstate agency with an affirmative defense to its federal statutory obligations as Congress wishes, subject only to independent constitutional strictures such as the Equal Protection Clause. Congress would ordinarily be expected to address the matter through a specific statutory provision. It may also be that a court could legitimately infer Congress’ intention to provide such a defense from its consent to an interstate compact the terms of which patently attempt to grant immunity from suit in federal court. See Lake Country Estates, Inc. v. Tahoe Regional Planning Agency, 440 U. S. 391, 401 (1979).
But it cannot be disputed that there is no such showing here. Congress has not passed any law conferring any immunity on the Port Authority. Nor did the compact to which Congress consented include any provision attempting to grant immunity from suit in federal court. Consequently, I believe that this Court, following its current view of the Eleventh Amendment, could have rested its decision today on the absence of an Eleventh Amendment defense as well as on waiver.
I join Part I of the opinion of the Court.
The Eleventh Amendment provides:
“The Judicial power of the United States shall not be construed to extend to any suit in law or equity, commenced or prosecuted against one of the United States by Citizens of another State, or by Citizens or Subjects of any Foreign State.”
Both Patrick Feeney and Charles T. Foster asserted claims under the Federal Employers’ Liability Act (FELA), 45 U. S. C. § 51 et seq. (1982 ed.), the Boiler Inspection Act, 45 U. S. C. §22 (1982 ed.), and the Safety Appliance Act, 45 U. S. C. § 1 (1982 ed.).
The phrase is Alexander Hamilton’s. He used it in a passage reassuring States, which might have been concerned with the securities they issued and might not have wished to honor, that the grant of diversity jurisdiction in Article III would not annul their defense of sovereign immunity should they be sued in federal court under state law on a writ of debt.
“It is inherent in the nature of sovereignty, not to be amenable to the suit of an individual ivithout its consent. This is the general sense, and the *311general practice of mankind; and the exemption, as one of the attributes of sovereignty, is now enjoyed by the Government of every State in the Union. Unless therefore, there is a surrender of this immunity in the plan of the Convention, it mil remain with the States. . . . [Tjhere is no color to pretend that the state governments would, by the adoption of that plan, be divested of the privilege of paying their own debts in their own way, free from every constraint, but that which flows from the obligations of good faith.” The Federalist No. 81, p. 567 (H. Dawson ed. 1876) (second emphasis added).
This Court has twice before addressed the question whether a bistate entity could raise an Eleventh Amendment defense to federal jurisdiction, and twice rejected the specific immunity claim presented. See Petty v. Tennessee-Missouri Bridge Comm’n, 359 U. S. 275, 279-280 (1959) (not reaching “arm-of-the-State” issue but finding that any Eleventh Amendment bar had been waived); Lake Country Estates, Inc. v. Tahoe Regional Planning Agency, 440 U. S. 391, 401-402 (1979) (finding subject to federal jurisdiction at least a bistate entity whose parent States disclaimed any immunity for it, whose compact failed to disclose any congressional intent to protect it from federal jurisdiction, and whose obligations were not binding on either parent State).
The Framers had serious concerns about this problem, as shown by their inclusion of provisions even stricter than those in the Articles of *315Confederation. In the Articles of Confederation, the limitation on the “sovereignty, freedom and independence” retained by each State was:
‘“No two or more states shall enter into any treaty, confederation or alliance whatever between them, without the consent of the united states in congress assembled, specifying accurately the purpose for which the same is to be entered into, and how long it shall continue.’” Frankfurter & Landis, The Compact Clause of the Constitution — A Study in Interstate Adjustments, 34 Yale L. J. 685, 693-694 (1925) (quoting Art. VI, Articles of Confederation).
That the Interstate Compact and State Treaty Clauses reflect a disfavor of intermediate-level sovereigns is well settled. See Frankfurter & Landis, supra, at 694 (“The absence of any powerful national capabilities on the part of the Confederacy, except in the conduct of foreign affairs, underlines the significance of these clauses [in the Articles of Confederation] as insurance against competing political power. This curb upon political combinations by the States was retained almost in haec verba by the Constitution”); V. Thursby, Interstate Cooperation, A Study of the Interstate Compact 4 (1953) (suggesting that one reason for the Compact Clause was that the Federal Government could be endangered by political combinations of the States); Virginia v. Tennessee, 148 U. S. 503, 518 (1893) (declaring that the compacts to which the Compact Clause refers are “those which may tend to increase and build up the political influence of the contracting States, so as to encroach upon or impair the supremacy of the United States or interfere with their rightful management of particular subjects placed under their control”); Barron v. Baltimore, 7 Pet. 243, 248 (1833) (explaining that agreements between States for political purposes could “scarcely fail to interfere with the general purposes and intent of the [Constitution”).
Lake Country Estates, Inc. v. Tahoe Regional Planning Agency, 440 U. S. 391 (1979), is not inconsistent with this analysis. In that ease, we noted that the Eleventh Amendment is available only to ‘“one of the United States,’ ” that its protection has never been extended to political subdivisions even though such entities exercise a “ ‘slice of state power,’ ” and that there was “no justification for reading additional meaning into the limited language of the Amendment” so as to immunize a bistate agency unless Congress had indicated a desire to place the agency in a special position. Id., at 400-401. The Court noted that neither of the States that created the bistate agency could veto its actions and observed that the conclusion that “TRPA is not in fact an arm of the State subject to its control is perhaps most forcefully demonstrated by the fact that California has resorted to litigation in an unsuccessful attempt to impose its will on TRPA.” Id., at 402.
This Court has also found that the Eleventh Amendment bars a suit seeking equitable relief where a state officer defendant is not alleged to have acted contrary to state or federal law and the State is the real party in interest. See Cory v. White, 457 U. S. 85 (1982) (interpleader action). However, no State is a real party in interest in an action for prospective injunctive relief brought against an interstate agency, because any injunction would run against the agency, which is not an “arm of the State.” See Part II-A, supra. Therefore, actions for prospective relief against an interstate agency would not be barred by the Eleventh Amendment, as the Court interprets it, whatever the agency’s relationship to the States’ treasuries. See generally Ex parte Young, 209 U. S. 123 (1908); Quern v. Jordan, 440 U. S. 332 (1979).
This Court has not decided which arrangements between a State and a nominal defendant are sufficient to establish that the State is the real party in interest for Eleventh Amendment purposes. It may be that a simple indemnification clause, without more, does not trigger the doctrine. Lower courts have uniformly held that States may not cloak their officers with a personal Eleventh Amendment defense by promising, by statute, to indemnify them for damages awards imposed on them for actions taken in the course of their employment. See, e. g., Blaylock v. Schwinden, 862 F. 2d 1352, 1354, n. 1 (CA9 1988) (“The eleventh amendment prohibits a district court-from ordering payment of a judgment from the state treasury. The court may properly order the officials to pay damages under § 1983, but if the officials desire indemnification under the state statute, they must bring their own action in state court”); Duckworth v. Franzen, 780 F. 2d 645, 650-651 (CA7 1985) (“[T]he purpose of the Eleventh Amendment is only to protect the state against involuntary liability. If the State chooses to pick up the tab for its errant officers, its liability for their torts *318is voluntary. . . . Moreover, it would be absurd if all a state had to do to put its employees beyond the reach of section 1983 and thereby make the statute ineffectual except against employees of local governments . . . was to promise to indemnify state employees for any damages awarded in such a suit”); Wilson v. Beebe, 770 F. 2d 578, 588 (CA6 1985) (“State cannot clothe [state officer] with [Eleventh Amendment] immunity by voluntarily agreeing to pay any judgment rendered against him”).