“Richard Nixon (January 20, 1969—August 9, 1974). Republican. President Nixon was the only president to resign from office. His presidency involved improvement of relations with the People’s Republic of China, the ending of U.S. involvement in the Vietnam War, and the achievement of détente with the Soviet Union. Nixon’s second term was riddled with controversy of the Watergate scandal.”
“U.S. Presidents,” TotallyHistory.com