Immunizes states from suits brought by out-of-state citizens and foreigners not living within the state borders; lays the foundation for state sovereign immunity. Proposed March 4, 1794; ratified February 7, 1795, 11 months later. The Eleventh Amendment is an amendment to the United States Constitution which was passed by Congress on March 4, 1794, and ratified by the states on February 7, 1795. The Eleventh Amendment restricts the ability of individuals to bring suit against states of which they are not citizens in federal court. Wiki link