McDonald v. City of Chicago, 561 U.S. 742 (2010), was a landmark decision of the Supreme Court of the United States that found that the right of an individual to "keep and bear arms", as protected under the Second Amendment, is incorporated by the Fourteenth Amendment and is thereby enforceable against the states. The decision cleared up the uncertainty left in the wake of District of Columbia v. Heller (2008) as to the scope of gun rights in regard to the states.