A plaintiff seeking federal jurisdiction against a State under the state-citizen or state-alien diversity clauses would be asserting a cause of action based on state law, since a federal question or admiralty claim would provide an independent basis for jurisdiction that did not depend on the identity of the parties.
473 U.S. at 262. That availability of the federal question and admiralty jurisdictions provided a basis for bringing a federal claim did not preclude resort to the diversity jurisdiction to pursue that claim. The availability of one head of jurisdiction does not bar resort to others. That choice is for the plaintiff, not the court.
This is not to say that the Court can decline to measure national enactments by the Constitution when it is called upon to face the question in the course of ordinary litigation. . . . It is rather to say that the Court is on weakest ground when it opposes its interpretation of the Constitution to that of Congress in the interest of the states, whose representatives control the legislative process and, by hypothesis, have broadly acquiesced in sanctioning the challenged Act of Congress.
Wechsler, supra note 103, at 559.
[I]n Congress, as well as in the state legislatures, there was strong opposition to recognition of any liability to reimburse British creditors or to make restitution of seizures of Loyalist property. In fact, this was the transcendent political issue of 1794 and 1795, when the Eleventh Amendment was under active consideration, as provisions of the Jay Treaty clarifying the rights of Loyalists came under attack in Congress and throughout the country.
Id. at 7071. But the threat posed by the Peace Treaty was no less a problem when the Constitution was adopted and ratified by the states, and is thus pertinent to the general understanding at the time. See also infra notes 179180 (discussing the views of Professor Field).
Were a state to lay a duty on exports, to collect the money and place it in her treasury, could the citizen who paid it . . . maintain a suit in this Court against such State, to recover back the money?
Perhaps not. Without, however, deciding such supposed case, we may say, that it is entirely unlike that under consideration. . . .
But let us vary the supposed case as to give it a real resemblance to that under consideration. Suppose a citizen to refuse to pay this export duty, and a suit to be instituted for the purpose of compelling him to pay it. He pleads the constitution of the United States in bar of the action, notwithstanding which the Court gives judgment against him. That would be a case arising under the constitution, and would be the very case before the Court.
. . . .
The case of a State which pays off its own debts with paper money, no more resembles this than do those to which we have already adverted. The courts have no jurisdiction over the contract. . . . But . . . suppose a State to prosecute one of its citizens for refusing paper money, who should plead the constitution in bar of such prosecution. If his plea should be overruled, and judgment rendered against him, his case would resemble this . . . .
Id. at 40203 (emphasis added).
Despite the narrowness of its terms, since Hans v. Louisiana . . . we have understood the Eleventh Amendment to stand not so much for what it says, but for the presupposition of our constitutional structure which it confirms: that the States entered the federal system with their sovereignty intact; that the judicial authority in Article III is limited by this sovereignty . . . and that a State will therefore not be subject to suit in federal court unless it has consented to suit, either expressly or in the plan of the convention.
Id. at 779 (citations omitted & emphasis supplied). This seems to be an unexceptionable formulation of the law of sovereign immunity as it affects the states. Certainly, it does not look like a statement that the Amendment, as such, governs in contexts where by its terms it does not apply. Yet shortly following the quoted language, the Court declared that it was the Amendment that had been the basis for sustaining the finding of sovereign immunity in Principality of Monaco. See id. at 78081; supra notes 167174 and accompanying text. Further, the holding in Blatchford itself seems to have rested on the Eleventh Amendment. See 501 U.S. at 77982. It was so understood by the dissenters. Id. at 78889 (Blackmun, J., dissenting). This is incomprehensible, for if the states entered the Union with their sovereignty intact, and are subject to suit (absent waiver) only if they gave their consent in the plan of the convention, then their immunity does not derive from the subsequently-adopted Eleventh Amendment. It obviously follows that, as the Court said, the Amendment, within its stated compass, merely confirms a prior state of the law.