517 U.S. 44 (U.S. Supreme Court 1996)
Seminole Tribe of Florida v. Florida is a cornerstone of modern Eleventh Amendment jurisprudence and federalism.
1) May Congress, acting pursuant to Article I (including the Indian Commerce Clause), abrogate a State's Eleventh Amendment sovereign immunity and authorize suits by an Indian tribe against a State in federal court? 2) If not, may the tribe obtain prospective injunctive relief against a state official under Ex parte Young to enforce the State's duty to negotiate in good faith under IGRA?
• Abrogation: Congress may abrogate state sovereign immunity only if (a) it makes its intention to do so unmistakably clear in the statute's text, and (b) it acts pursuant to a valid grant of constitutional authority. While Section 5 of the Fourteenth Amendment satisfies this requirement (Fitzpatrick v. Bitzer), Article I powers do not. Pennsylvania v. Union Gas Co., which permitted Commerce Clause-based abrogation, is overruled. • Ex parte Young: The Ex parte Young doctrine permits suits against state officials for prospective relief to end ongoing violations of federal law, but it does not apply when Congress has enacted a detailed, comprehensive remedial scheme that is intended to be exclusive, or where the relief sought effectively enforces a cause of action Congress foreclosed against the State.
1) No. Congress lacks authority under Article I to abrogate States' Eleventh Amendment immunity from suit by private parties and Indian tribes in federal court. IGRA's abrogation provision is unconstitutional. 2) No. Ex parte Young is unavailable because IGRA provides a detailed remedial scheme for enforcing the duty to negotiate in good faith, indicating Congress did not intend an alternative route via suit against state officials.
Seminole Tribe reshaped the law of state sovereign immunity by categorically barring Article I-based abrogation and confining valid abrogation to Section 5 of the Fourteenth Amendment. The decision triggered a series of cases reinforcing robust state immunity (e.g., Alden v. Maine; College Savings Bank; Kimel; Garrett) and narrowed access to Ex parte Young where Congress has supplied a detailed enforcement scheme. For students, the case is central to understanding the interplay among the Eleventh Amendment, structural federalism, congressional power, and federal courts' remedial doctrines. It also illustrates how statutory design can foreclose otherwise-available equitable routes, underscoring the importance of remedial architecture in federal legislation.