....
divided loyalties to other nations?!
From Vattel's 'Law of Nations':
§ 212. Citizens and natives. The citizens are the members of the civil society; bound to this society by certain duties, and subject to its authority, they equally participate in its advantages. The natives, or natural-born citizens, are those born in the country, of parents who are citizens. As the society cannot exist and perpetuate itself otherwise than by the children of the citizens,
those children naturally follow the condition of their fathers, and succeed to all their rights.
Any questions why the founders put the natural born citizenship requirement in the Constitution?