Not to discourage further answers, but I will link to a previous answer I wrote about this topic.

I think that in the context of the Cold War, fighting "communism" was for the United States often a shorthand for fighting Soviet influence. The answer I linked to gives a few examples of points in the Cold War when the United States was happy to give material support to countries ruled by communist parties, such as Tito's Yugoslavia, the People's Republic of China, Ceausescu's Romania, and Siad Barre's Somalia, when this support was seen to provide a check to Soviet power. In the case of the PRC alone this support included billions of dollars' worth of weapons sales.

Which is not to say that there wasn't a strong hostility to communism in US domestic politics during that time. Just that the US government and elected officials managed to find ways to make peace with that hostility when it served US national interests, especially vis-a-vis the Soviet Union.