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.
United States news media and the Vietnam War
Many Americans felt betrayed by the government for withholding or deliberately manipulating information about the progress of the war, and once they saw on their televisions and read in their newspapers firsthand a less optimistic version of the war than the government had painted, public pressure to withdraw American power from Vietnam mounted until the government yielded and began to withdraw troops under Nixon in July 1969 (though the last troops would not be withdrawn until 1973).
Additionally, a study authorized by the Trilateral Commission in 1975 to examine the "governability" of American democracy found that "the most notable new source of national power in 1970, as compared to 1950, was the national media," suggesting also that there was "considerable evidence to suggest that the development of television journalism contributed to the undermining of governmental authority." Although this report was commissioned on the heels of the messy conflict of the war itself, the sentiment that the development of new journalistic media such as television supplanted governmental authority in attaining the support of the American public during the Vietnam War has been accepted and upheld by many scholars through present day.