The United States Golf Association (USGA) is the United States' national association of golf courses, clubs and facilities and the governing body of golf for the U.S. and Mexico. Together with The R&A, the USGA produces and interprets the Rules of Golf. The USGA also provides a national handicap system for golfers, conducts 13 national championships, including the U.S. Open, U.S. Women's Open and U.S. Senior Open, and tests golf equipment for conformity with regulations. In addition, the USGA is a leader in turfgrass research through its Green Section and it provides hundreds of grants to grass-roots programs through its Foundation in Colorado Springs, Colorado. The USGA Foundation has provided more than $60 million in grants to programs for underprivileged youth and individuals with disabilities. It is the largest contributor to The First Tee program. The USGA is currently led by Executive Director Mike Davis, and President Thomas J. O'Toole Jr., and is headquartered at Golf House in Far Hills, New Jersey.