Congress has a hard time overriding presidential vetoes because it is hard to get two thirds of a vote from both sides.
The Congressional passage of the gulf on Tonkin Resolution
Answer:
Non-communists were unfairly accused
Explanation:
McCarthyism - a vociferous campaign against alleged communists in the US government and other institutions carried out under Senator Joseph McCarthy in the period 1950–54. Many of the accused were blacklisted or lost their jobs, although most did not in fact belong to the Communist Party.
Therefore, the McCarthyism's limited the actions of non-communists, who had to be cautious, as to not be listed, as a "commie."