They lost faith because President Johnson hadn't delivered the victory he had repeatedly promised.
Answer:
james madison did he was the one
Brehnev welcomed Nixon to visit Moscow. The Soviet Union reacted to the standardization of relations amongst China and the United States by having Brehnev welcome Nixon to Moscow. President Nixon trusted that normalizing relations with china drive a wedge amongst China and the Soviet Union.
The Vietnam War made the United States economy damaged. Drafting of soldiers was also put to end. Mistrust in the government was established making the leaders not credible. The US government also was hesitant to meddle with the conflicts of other countries.
Marquis de Lafayette on August 5th, 1777.