The most definitive court case on the subject is United States v. Wong Kim Ark, 169 U.S. 649 (1898). In Wong Kim Ark, the Supreme Court held that a person who is born in the United States, of parents who, at the time of his birth, are subjects of a foreign power, whose parents have a permanent domicile and residence in the United States, and whose parents are there carrying on business and are not employed in any diplomatic or official capacity of the foreign power to which they are subject is considered subject to the jurisdiction of the United States and therefore a citizen of the United States by birth under the 14th Amendment.
Isn't this considered precedence?