Goldwater v. Carter, 444 U.S. 996 (1979), was a United States Supreme Court case which was the result of a lawsuit filed by Senator Barry Goldwater and other members of the United States Congress challenging the right of President Jimmy Carter to unilaterally nullify the Sino-American Mutual Defense Treaty, which the United States had signed with the Republic of China, so that relations could instead be established with the People's Republic of China. Goldwater and his co-filers claimed that the President required Senate approval to take such an action, under Article II, Section II of the U.S. Constitution, and that, by not doing so, President Carter had acted beyond the powers of his office.