Well, there's this:
... "new citizens may be born or they may be created by naturalization" and that the Constitution "does not, in words, say who shall be natural-born citizens." Under the common law, according to the court, "it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives, or natural-born citizens, as distinguished from aliens or foreigners."
-Chief Justice Morrison Waite, unanimous opinion from Minor v. Happersett
That rings a bell. Still a case needs about this needs to go up to SCOTUS. Kamela will do.