Black’s Law Dictionary (9th Edition) defines “Natural Born Citizen” as “A person born within the jurisdiction of a national government”.
The Constitution does not define the phrase natural-born citizen, and various opinions have been offered over time regarding its precise meaning. A 2011 Congressional Research Service report stated
The weight of legal and historical authority indicates that the term “natural born” citizen would mean a person who is entitled to U.S. citizenship “by birth” or “at birth”, either by being born “in” the United States and under its jurisdiction, even those born to alien parents; by being born abroad to U.S. citizen-parents; or by being born in other situations meeting legal requirements for U.S. citizenship “at birth”. Such term, however, would not include a person who was not a U.S. citizen by birth or at birth, and who was thus born an “alien” required to go through the legal process of “naturalization” to become a U.S. citizen.[1]
WHICH 'Congressional Research Service'? Was it an official government body actually attached to the Congress, or was it done by one of the Democrat's PACs?
Without seeing and verifying the source, your evidence is meaningless.
Do you have a link?