The United States Soccer Federation (USSF), commonly referred to as U.S. Soccer, is the official governing body of soccer in the United States. It is a full member of FIFA and governs American soccer at the international, professional, and amateur levels, including: the men's and women's national teams, Major League Soccer (MLS), the National Women's Soccer League (NWSL), youth organizations, as well as the beach soccer, futsal, Paralympic, and deaf national teams. U.S. Soccer sanctions referees and soccer tournaments for most soccer leagues in the United States. It also administers and operates the U.S. Open Cup and SheBelieves Cup. U.S. Soccer is headquartered in Chicago.