Children born on USA soil from parentS(note plural) who are citizens of the USA are certainly eligible for POTUSA. I would take from what you said some of the young are not eligible. Even those persons who swear allegience to the USA and to forgo any such allegience to any other foreign nation to become USA citizens are not eligible for POTUSA,as the roots for eligibility go deeper for a natural born citizen to the already established allegience of the parents. I am well aware of this predicament. My brother(killed in the battle for Okinawa) and I a WWII vet were born in the USA of immigrant parents not natualized at our births. I have had to be satisfied with just being a USA citizen and I know my brother by letters was willing to die for just that right.
I give up.
Never going to comment again on what I don’t fully understand.