Whether the Eleventh Amendment permits a federal court to enjoin state institutions and state officials to comply with state law.
Holding
No. The Eleventh Amendment bars federal-court relief against state officials when the claim is that they violated state law and the requested relief effectively operates against the State.
Reasoning
The Eleventh Amendment embodies the broader constitutional principle that an unconsenting State is generally immune from private suit in federal court. That immunity protects not only whether a State may be sued, but also where it may be sued. A suit nominally directed at officials is barred when the State is the real party in interest and the decree would operate against the State itself.
The relief here was plainly institutional and official in character. It required major changes to the operation, funding, and structure of Pennhurst, a state institution, and thus directly affected Pennsylvania's administration of its own programs. The defendants were acting in their official capacities in administering the institution, even though the lower court found that they had failed to meet state-law duties.
Ex parte Young permits prospective relief against state officers who violate federal law because federal courts must vindicate the supremacy of federal law. Edelman v. Jordan preserves that exception for prospective, rather than retroactive monetary, relief. But neither doctrine applies where the asserted violation is solely of state law: enforcing state law against state officials in federal court does not vindicate federal supremacy and intrudes especially deeply on state sovereignty.
The Court rejected the argument that any state-law violation makes an official's conduct ultra vires and therefore outside Eleventh Amendment protection. State officers may make errors in exercising delegated authority without losing their official character. The MH/MR Act gave the defendants broad authority and discretion to operate Pennhurst; respondents alleged an inadequate exercise of that authority, not action undertaken with no authority whatever.