Those who adhered to their communities as their primary allegiance, were natural born citizens of their communities, their States, and the United States that formed out of their communities.
This assertion is very easily disproved by a most obvious fact: if it were true there would be no need for Article II's Grandfather Clause.
Not true, Ray. The grandfather clause was passed to honor and not offend those who had come here from other places, who were not natural born Americans, who had risked their lives and fortunes to help us gain Independence.
Among these were James Wilson, Founding Father and signer of the Declaration of Independence, a "major force in drafting the United States Constitution," and one of our first set of Supreme Court Justices.
Wilson was born in Scotland and didn't come here until he was about 24 years old. If you read the debates of the Constitutional Convention, you can tell that he was a bit offended at the suggestion that some like himself who had joined this country from other lands and risked their lives to help us succeed might be excluded from positions in the new government.
Also in this category was one of our very most prominent Founding Fathers, Alexander Hamilton, who might well have been President if he had not died in a duel while still in his 40s. Without Hamilton, we might very well not have the Constitution, because he was the principal author of The Federalist, a highly influential series of 85 newspaper essays in which he urged ratification of the Constitution in the critical State of New York.
Without the grandfather clause, neither Hamilton nor Wilson would have been eligible to be President. It was to honor and reward men such as these that the grandfather clause was passed.