Original sentence: At McCarthy's instigation the terms of reference were widened to investigate the U.Department of Agriculture.Department of State and U.He famous for what came to be called "McCarthyism", an unfocused "witchhunt" for Communists in government, particularly the U.In a now famous cross examination at these latter hearings, McCarthy's motives were publically discredited by an Army lawyer.In this, McCarthy was following the  lead  House Un-American Activities Committee (HUAC), with the notable difference that HUAC found Communists and McCarthy found none.It was part of a general atmosphere of anti-communism that had been fostered by the Cold War.McCarthyism was characterized by wild, unsubstantiated charges and abusive use of the Senate's investigatory powers.Shortly afterwards, in 1954, the Senate censured McCarthy for "conduct contrary to Senatorial tradition".The force of McCarthy's personality was so great that he virtually took over the anti-Communist movement in the United States, ultimately discrediting even legitimate concerns about Communist influence in various government bodies and other organizationsl
Edited sentence: Famous for the  House Un-American Activities Committee (HUAC) "witchhunts" against supposed Communists in the USA