One is either born a citizen or one must be naturalized.
Ah, but since the Cable Act, the categories of "born" citizens were divided in two. "Natural born" and "Split Allegiance."
Prior to that, All persons were either born to two citizen parents, or two foreign citizens. There was no "in-between" category. The Cable act created one.
The Cable act cannot change the Constitution.
The Constitution only contemplated two subdivisions of US citizenry - those who are citizens through the natural act of being born and those that must be naturalized.