... which begs the question of just why you overlapped them.
Why didn’t you just put two separate circles floating by their lonesomes? That would be more in keeping with your apparent belief, that there is no significance to any overlap, that it’s meaningless to the point of never, EVER having been named.
Because that would imply that there do not exist any persons who are born on US soil and have citizen parents.
And that is not a representation of reality.
The existing diagram is.