“There is a reason the Founding Fathers attached the requirement of being a “natural born citizen” to the President (and, with the passage of the Twelfth Amendment, the Vice President) only and no other federal offices.”
The natural born citizenship clause became far more important than simply allowing foreigners into the office of the Presidency when the Presidency also became the Commander-in-Chief of all the nation’s armed forces. If it wasn’t for this fact, simply being a 14A §1 birthright citizen would have sufficed. That is to say, a citizen at birth with no need to naturalize.
NBC=Plain Vanilla U.S. Americans only.
No foreign spice.
(Yes, most Vanilla comes from Mexico.)