Even if one or both parents are foreigners?
Yes.
That doesn't mean you wouldn't make arguments to the contrary; it doesn't mean you wouldn't introduce the correspondence among members of the Constitutional Convention regarding Vittel; but the real bottom line is that if he can prove he was born in the USA, he is almost certain to prevail on the Natural Born issue; if we can prove he was not born in the USA, he should lose.
Interesting take!!!
I just wonder WHY Hawaii DNC refused to endorse his candidacy on THEIR ballot first time around, hmmm???