[sourcery]

If Minor's definition "... it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also" defines a set that cannot be added to or subtracted from, where does that place children born to U.S. diplomats serving abroad?

Excellent question.

If one's theory is that "natural born citizen" is intended to the US analog of "subject born," then the answer would be yes. But I don't agree with the idea that NBC is, by original intent, to be analogous to "subject born."

If one's theory is that the 14th Amendment defines NBC, then the answer is no.

If one's theory is that the "law of nations" is the foundation of NBC, then the answer is probably yes.

But there is no US case law on the matter. Such children would definitely be citizens per the naturalization law, but none of them have ever needed to be ruled to be NBC by a court, even though they may be.

[bushpilot1]

Shakespeare Henry the V: “Were all thy children kind and natural?”

Is the key to the meaning of natural born citizen. Who are the natural children?