The Framers wanted to protect that one office from divided loyalties. It’s less likely that a one hundred percent American will empathize with America’s enemies.
Why was Cruz the ONLY US senator who participated in the foreign invader welcome party? Why was he the ONLY one who thought the best way to stem the never-ending flood of foreign invaders was to have a high ranking US politician gift them with soccer balls and teddy bears?
Why was Trump the only Republican running who gave millions to Hillary, Bill, and several other liberal politicians? Why was Trump the only person trying to exert eminent domain over an old ladies house to build a parking garage for his casino?
See how that works?