Ex parte Young, 209 U.S. 123 (1908) (U.S. Supreme Court)
Ex parte Young is a cornerstone of American public law, defining when and how federal courts may issue prospective relief against state officials who are enforcing unconstitutional state laws. It reconciles two powerful principles: state sovereign immunity under the Eleventh Amendment and the supremacy of federal law.
Does the Eleventh Amendment bar a federal court from enjoining a state attorney general from enforcing a state statute alleged to violate the U.S. Constitution, and was the federal court's contempt order valid?
Under the Ex parte Young doctrine, the Eleventh Amendment does not bar suits in federal court against state officers in their official capacities for prospective injunctive or declaratory relief to halt ongoing violations of federal law. Because an unconstitutional act is void, a state officer who enforces such a law is deemed to be acting without state authority and may be restrained. The officer sued must have a connection to enforcing the challenged statute. The doctrine permits only prospective relief and does not authorize retroactive monetary awards from the state treasury or relief premised solely on state law.
No. A suit for prospective injunctive relief against a state officer to prevent enforcement of an unconstitutional statute is not a suit against the State for Eleventh Amendment purposes. The federal court had jurisdiction to issue the injunction, and the contempt order against the Attorney General for violating it was valid.
Ex parte Young is foundational for modern public law litigation. It enables plaintiffs to seek prospective injunctive or declaratory relief against state officials to stop ongoing violations of federal law, thereby preserving the supremacy of federal constitutional and statutory rights while respecting state immunity from damages. The doctrine undergirds much of civil rights practice, including suits under 42 U.S.C. § 1983 for injunctive relief against state officials. Subsequent cases refined its limits: the officer must have a real connection to enforcement; relief must be prospective (Edelman later barred retroactive monetary relief); and federal courts cannot order state officials to comply with state law (Pennhurst). Other doctrines—such as Younger abstention and specialized remedial schemes—can constrain its use. Still, Ex parte Young remains the principal mechanism for halting unconstitutional state action in federal court.