[allmendream]

If so where is that understanding reflected in the Constitution?

Penumbras and emanations again?

The U.S. Constitution currently envisions only TWO types of U.S. citizen - those that were born with natural allegiance and those that had to be naturalized into that state of natural allegiance.

[philman_36]

If so where is that understanding reflected in the Constitution?
See #41.... Article 1, Section 8, Clause 4..."establish an uniform Rule of Naturalization".

[philman_36]

You and others seem strangely intent on establishing the idea that only the British aspect/concept of citizenship was considered by the Founding Fathers.

It wasn't the only aspect/concept considered as many nation's aspects/concepts were considered.

And British law wasn't the only place where "legal terms", or such similar concepts, such as “natural born” and “naturalized” were used.
That's like saying neither France nor Germany had a law governing armed robbery, murder or rape.

That alone says something.