Eleventh Amendment to the United States Constitution
The Eleventh Amendment (Amendment XI) 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.
Source: Wikipedia — Eleventh Amendment to the United States Constitution (CC BY-SA 4.0)