Thinking the US will become communist is just propaganda. It is fairy tales. It is spin to further some corporate agenda. It is said to rob you from your rights and wealth. They say it so you will vote for 'capitalist policies', that actually just are policies which aim to spoil some corporations or investors. This spoiling means they, for example, get the 'freedom' to lawfully swindle wealth from unsuspecting people, and doing things about it is then communist or not possible.
Spoiling corporations is not in the best interest of capitalism. The free market just means anarchy and no rules and definitely no responsibility, in the market. Which translates in the people being under attack from all kinds of directions, cos the market provides almost everything for us.
Politicians and media who always scream about communism are always about removing laws, laws that give the people rights and protection. It can take decades or longer to fix a system that is hollowed out like that. If it can be fixed at all.