Answer:
This eventually happened because he irrationally accused people of perjury about being communist which leads him to have a Senate censure against him.
Step-by-step explanation:
McCarthyism is the practice of making accusations of subversion or treason, especially when related to communism. The term refers to U.S. Senator Joseph McCarthy and has its origins in the period in the United States known as the Second Red Scare, lasting from the late 1940s through the 1950s.