To be a “Natural Born” citizen of the United States requires that one be born in the United States of parents (plural) who are themselves citizens of the United States.
The fourteenth amendment does not address “natural born” citizenship at all and thus does not affect the Constitutional requirement that one be a Natural Born citizen of the United States in order to hold the office of President of the United States at all!
Barrack Hussein Obama II knows all of this and there lies the answer to your other questions.
YOu know all that - and I know all that... but Joe & Darlene Six-pack in Trailerpark USA don’t. And there are a lot of them. And that is a problem.