No professional league in any of the major pro sports leagues in the U.S. or Canada, including the professional soccer leagues, currently uses a system of promotion and relegation. The country's governing body for the sport, the United States Soccer Federation (also known as the USSF or U.S. Soccer), oversees the league system and is responsible for sanctioning professional leagues. Amateur soccer in the United States is regulated by the United States Adult Soccer Association (USASA), the only amateur soccer organization sanctioned by the USSF.  College soccer in the United States is sanctioned by bodies outside the direct control of the USSF, the most important of which is the National Collegiate Athletic Association (NCAA).