No, it is not as simple as that. It is jus sanguinis or jus solis. Birthright citizenship is the law of the land and children born abroad to American citizen (s) can automatically acquire US citizenship. I know that as a fact professionally and personally.
There is no argument that a person born to American parents abroad is a “US citizen”, but not a Natural Born Citizen which is a “sub-set”. Our Founders intended NBC for a reason.
See my post #20. The courts have never ruled on what our Founders intended by “natural born citizen” as it applies to eligibilty for the Presidency under the Constitution. Last time I checked, McCain was on the 2008 ballot along with Obama, who has now been President for almost 30 months.
Re: “a person born to American parents abroad is a “US citizen”, but not a Natural Born Citizen which is a “sub-set.”
Actually, “natual born” is a superset, not a subset.