What impact did the fall of China to Communism have on American politics?

it was huge

Explanation:

West Virginia before the Ohio County Women's Republican Club, McCarthy blamed Acheson, whom he called "this pompous diplomat in striped pants", for the "loss of China", making the sensationalist claim: "While I cannot take the time to name all of the men in the State Department who have been named as members of the Communist Party and members of a spy ring, I have here in my hand a list of 205...a list of names that were known to the Secretary of State and who nevertheless are still working and shaping the policy of the State Department".[10] The speech, which McCarthy repeated shortly afterwards in Salt Lake City, made him into a national figure.[11] In the early 1950s, the Truman administration was attacked for the "loss" of China with Senator McCarthy charging in a 1950 speech that "Communists and queers" in the State Department, whom President Harry S. Truman had allegedly tolerated, were responsible for the "loss" of China.[12] In a speech that said much about fears of American masculinity going "soft" that were common in the 1950s, McCarthy charged that "prancing minions of the Moscow party line" had been in charge of policy towards China in the State Department while the Secretary of State Dean Acheson was a "dilettante diplomat who cringed before the Soviet colossus".[12]

The report of the Senate Internal Security Subcommittee in 1951 written by Senator Pat McCarran concluded that China was indeed "lost" because of the policy followed by the State Department, declaring: "Owen Lattimore and John Carter Vincent were influential in bringing about a change in United States policy...favorable to the Chinese Communists".[13] Through McCarran was careful not to call Lattimore a Soviet spy in his report, which would have allowed him to sue for libel, he came very close with the statement: "Owen Lattimore was, from some time beginning in the 1930s, a conscious, articulate instrument of the Soviet conspiracy".[14] In response to the McCarran report; the Washington Post declared in an editorial attacked the thesis