Updated: Elon has officially formed a new party, the "America Party," and let's see if Trump can expel Elon or what he can do.
The problems that Elon will face if he indeed creates this political party are more than one, and all of them are huge to overcome, just because he has money. Trump has nothing to fear from this move. Plus, and most crucial, is that to be a US President, you have to be
born in the US, and Elon isn't. So, from the start, we are talking about the total nothing.