Richard M. Nixon - elected President in 1968 and 1972 representing the Republican party. He was responsible for getting the United States out of the Vietnam War by using "Vietnamization", which was the withdrawal of 540,000 troops from South Vietnam for an extended period. He was responsible for the Nixon Doctrine also. He was involved in D�tente, which was a way to create peaceful relations between the United States and the communist countries of Moscow and Beijing. One of the most distinct factors relating to Nixon was that he was the first President to ever resign due to the Watergate scandal. He resigned on August 8, 1974.