[calenel]

They chose their words carefully, they did not use citizen at birth, they used natural born citizen as it has a different meaning.

No, it does not. That is the whole failure of your argument. You cannot prove that it ever had another meaning. And that includes in your reference texts, which, unlike you apparently, I actually have read.

[Lurkinanloomin]

If you were right it would read citizen at birth. It doesn’t.