[phalangion]

Because you must be a natural-born citizen of the US.

[bigstrat2003]

Technically that can be amended, so it's still possible. I agree it's ridiculously unlikely though.

[diggan]

As far as I understand, there isn't really a consensus on what "natural-born citizen" actually means in the context of the US constitution. I'm sure some huge team of lawyers could argue that Musk somehow is "natural-born citizen".

[hprotagonist]

There are some edge cases like “your parents are american but you were born on vacation in france”, but this one is about as crystal clear as you can get: elon was born in SA to a mother who was born in CA to canadian parents and a father who was born in SA to south african parents. He is a naturalized citizen of the US, and ineligible to stand for election for the presidency.

[brewdad]

Well, today, he is a citizen. Presumably, he was natural-born and not fabricated in a laboratory. Does that make him a natural born citizen?

/s I hope.