The National Emergencies Act (50 U.S.C. 1601-1651) is a United States federal law passed in 1976 to stop open-ended states of national emergency and formalize Congressional checks and balances on Presidential emergency powers. The act sets a limit of two years on states of national emergency. It also imposes certain "procedural formalities" on the President when invoking such powers, and provides a means for Congress to countermand a Presidential declaration of emergency and associated use of emergency powers.