Richard Milhous Nixon (January 9, 1913 – April 22, 1994) was the 37th President of the United States from 1969–1974 and was also the 36th Vice President of the United States (1953–1961). Nixon was the only President to resign the office due to his part in the Watergate scandal and also the only person to be elected twice to both the Presidency and the Vice Presidency.
Michelle notes that Nixon is president when she takes Stan back to 1970 in "The Best Christmas Story Never".
Stan sees Ronald Reagan and Richard Nixon in his vision of Heaven with Brett Morris in "Dope & Faith", both of whom were Republican Party members.