“Zero’s father was not a citizen of the U.S. at any time. Zero is therefore not a “natural born” citizen. “
Legal evidence supporting your idea of what natural born citizen means?
"The Constitution does not, in words, say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common-law, with the nomenclature of which the framers of the Constitution were familiar, 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, from Minor v. Happersett, cited by Justice Horace Gray as the meaning of natural born citizenship in United States v Wong Kim Ark