Hans v. Louisiana, 134 U.S. 1 (1890), was a decision of the United States Supreme Court determining that the Eleventh Amendment prohibits the citizen of a U.S. state to sue that state in a federal court. The court left open the question of whether a citizen may sue his or her state in state courts. That ambiguity was resolved in Alden v. Maine, 527 U.S. 706, in which the Court held that a state's sovereign immunity forecloses suits against a state government in state court.