United States Chess Federation

The United States Chess Federation (USCF) is the national chess federation in the United States. It is the U.S. member of FIDE. It was established in 1939, and at present It based in Crossville, Tennessee. 
USCF organizes or sanctions over 20 national championships. It provides the main rating system for tournament chess in the United States. It does this together with about 2,000 affiliates, mostly chess clubs and local chess organizations. It publishes a magazine, "Chess Life", for its members and for general sale. Its membership is about 80,000.