"The Constitution does not in words say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives or natural-born citizens, as distinguished from aliens or foreigners.Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their parents."
And that is because children born in this country at the time from parents who were not yet citizens but in the process of naturalization were considered to be aliens and foreigners for the five years until their father took his oath of citizenship or they were old enough to take theirs.
The Constitution does not in words say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives or natural-born citizens, as distinguished from aliens or foreigners.Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their parents.
See the bolded sections. Citizenship is bestowed by jus soli; NBC may or may not be. Go ahead and try to force it, but you cannot. Please see post 653 for more details.
Now consider the underlined section; it talks about natural born citizens as opposed to aliens or foreigners. If you are a citizen then you are NOT an alien or foreigner! The sentence you think is the key - about NBC - actually draws a line between aliens and foreigners (non citizens) and NBCs. It says NOTHING about citizenship AND NBC status.
Bottom line: there aren't any legal findings that define what a natural born citizen is; claiming otherwise is at best ignorant, at worst malicious.