McCarthyism didn't completely vanish after the 1950s. Affiliation with communist organizations is still incompatible with naturalization: https://en.wikipedia.

McCarthyism didn't completely vanish after the 1950s. Affiliation with communist organizations is still incompatible with naturalization: https://en.wikipedia.org/wiki/Ideological_restrictions_on_naturalization_in_U.S._law#Current_ideological_restrictions_on_naturalization https://en.wikipedia.org/wiki/Ideological_restrictions_on_na...