The U.S Withdrew its troops from South Vietnam.
It was LBJ. Nixon eventually withdrew troops and tried to transfer responsibility to the South Vietnamese.
Ricahard Nixon was President when the US troops were withdrawn by March 29,1973.
Mikhail Gorbachev
The people of the United States came to feel that the war in Vietnam was unjustified. President Nixon withdrew troops and the North Vietnamese aided by China took over South Vietnam.
A peace agreement was reached with North Vietnam in which the U.S.and Australia would with draw there troops and North Vietnam would stop attacking South Vietnam. After the U.S. and Australia withdrew there troops North Vietnam broke it's agreement and attacked and over ran South Vietnam.
When President Nixon took office there was approximately 536,100 American troops in Vietnam. President Nixon immediately started reducing the number of troops in Vietnam.
NIXON
Several: Dwight D Eisenhower (1952-60) was President when the US first sent military advisors to Vietnam, followed by John F Kennedy (1961-63); Lyndon B Johnson (1963-68), who first sent combat troops; Richard M Nixon (1969-74), who withdrew all combat troops under intense pressure from Congress and the public; and Gerald R Ford (1974-76), who was President when North Vietnam defeated South Vietnam.
President Eisenhower sent US troops to Vietnam in 1955, President Ford pulled out the last US troops in 1975.
It was president Richard Nixon who finally pulled all U.S troops from Vietnam.
Richard Nixon