Ideological and historical prejudices aside, communism would actually fit American society quite well if you think about it.
>Personality cult? Check (Mt Rushmore)
>Stars on flag? Check
>Propaganda against old european monarchy? check
>a secular modernist constitution?check
>materialism and atheism ingrained into political discourse (muh gdpee muh gas prices)? check
>childhood indoctrination? check (allegiance pledge from early childhood)
>savior complexion? check (manifest communism destiny)