History of the United States (1964–1980)
The growing Watergate scandal was a major disaster for Nixon, eroding his political support in public opinion and in Washington. However he did manage to secure large-scale funding for South Vietnam, much of which was wasted. The United States withdrew its troops from Vietnam before the Paris Peace Accords in 1973. However, Watergate resulted in significant Democrat gains in the 1974 midterm elections and when the new 94th Congress convened the following January, it immediately voted to terminate all aid to South Vietnam in addition to passing a bill forbidding all further US military intervention in Southeast Asia. President Ford was against this, but as Congress had a veto-proof majority, he was forced to accept. South Vietnam rapidly collapsed as the North invaded it in force, and Saigon fell to the NVA on April 30, 1975. Later nearly one million Vietnamese managed to flee to the U.S. as refugees. The impact on the U.S. was muted, with few political recriminations, but it did leave a "Vietnam Syndrome" that cautioned against further military interventions anywhere else. Nixon (and his next two successors Ford and Carter) had dropped the containment policy and were not willing to intervene anywhere.
People's Peace Treaty
1. The Americans agree to the immediate and total withdrawal of all U.S. forces from Vietnam. 
2. The Vietnamese pledge that, as soon as the U.S. government publicly sets a date for total withdrawal, they will enter discussions to secure the release of all American prisoners, including pilots captured while bombing North Vietnam. 
3. There will be an immediate cease-fire between U.S. forces and those led by the Provisional Revolutionary Government of South Vietnam. 
4. They will enter discussions on the procedures to guarantee the safety of all withdrawing troops. 
5. The Americans pledge to end the imposition of Thieu-Ky-Khiem on the people of South Vietnam in
order to insure their right to self-determination and so that all political prisoners can be released. 
6. The Vietnamese pledge to form a provisional coalition government to organize democratic elections. All parties agree to respect the results of elections in which all South Vietnamese can participate freely without the presence of any foreign troops. 
7. The South Vietnamese pledge to enter discussions of procedures to guarantee the safety and political freedom of those South Vietnamese who have collaborated with the U.S. or with the U.S.-supported regime. 
8. The Americans and Vietnamese agree to respect the independence, peace and neutrality of Laos and Cambodia in accord with the 1954 and 1962 Geneva conventions, and not to interfere in the internal affairs of these two countries.
9. Upon these points of agreement, we pledge to end the war and resolve all other questions in the spirit of self-determination and mutual respect for the independence and political freedom of the people of Vietnam and the United States.