When I was a child back in the fifties the term natural born was in common use. I recall seeing it in comic strips even and I mean it was used without reference to the constitution. For example someone might be referred to as a natural born hunter, fisherman, golfer or whatever. It was understood to mean that you were born to be that and whatever else you might be could not be in conflict with that. Hank Williams Jr. recorded a song titled “Born to Boogie”, he could just as well have titled it “Natural Born Boogier” but it would not have the same flow and would not have made as good a lyric.
This country and FR are now home to a lot of people who only imagine that they know what the term natural born means. It really means that there is no way that you could be any kind of citizen than an American citizen, there can be no question of whether you can claim some other citizenship, if you can then you CANNOT be a natural born American even if you are born an American citizen.
Seems like only people of a certain age know that. ;)