As I stated perviously, the Constitution does not define natural-born.
Because it was common knowledge as that above link will point out.
I’ll read your link but I think we’re going around in circles - although I enjoy a healthy discussion - and lets face it, SCOTUS will not look at this issue because it is very confusing. I would argue that if descendants of imported slaves can claim to be natural born citizens even though no one ever took a naturalization exam, then the matter is settled.