In 2002, he became a U.S. citizen. [1] For most U.S. Americans, that makes him a U.S. American.

[1] https://en.wikipedia.org/wiki/Elon_Musk

I'm pretty sure Elon considers himself thoroughly American at this point.

You may find this surprising but there are in fact many foreign born employees working at SpaceX. Some of us even have accents and unusual names to go along with certain cultural quirks.

I don't consider them, or myself, any less American.

Actually their CEO is African American..

(nearly) All Americans are immigrants or children of immigrants.

So you're telling Elon Musk he isn't an American?

He wouldn't pay you any mind.

I'm a other-than-singular national as well and I certainly don't care to hear I'm not American.