Hypothetical, exactly the same situation as a Cuban father and an American mother in Canada.
Not what the founders had in mind.
Born here of citizen parents.
Naturally a US citizen because there is no possibility of being anything else.
If one can be something else because of foreign birth or foreign parent(s), they may still be a citizen but they are not a natural born citizen.
Thanks..... Hypothetical never crossed my mind in trying to figure out what you meant.