Passage: Although the U.S. had been aware of the PAVN/Viet Cong sanctuaries in Cambodia since 1966, President Lyndon B. Johnson had chosen not to attack them due to possible international repercussions and his belief that Sihanouk could be convinced to alter his policies. Johnson did, however, authorize the reconnaissance teams of the highly classified Military Assistance Command, Vietnam Studies and Observations Group (SOG) to enter Cambodia and gather intelligence on the Base Areas in 1967. The election of Richard M. Nixon in 1968 and the introduction of his policies of gradual U.S. withdrawal from South Vietnam and the Vietnamization of the conflict there, changed everything.

Question: When was Nixon elected?
1968