[Exmil_UK]

As for Mccain, I don't know if he was eligible or not. I would like to think that because his father was “serving in the Armies of the Nation,” Mccain was still a NBC.

However some of the language in the US-Pamama treaty is total double-speak, typical of the sort of mush you get from diplomats.

The point is not actually that he was or was not NBC, it was that there was a sufficient element of doubt to get Mccain to agree a non aggression pact.

Low level staffers are not even going to get a hint of something that sensitive.

[Nero Germanicus]

My understanding is that if a person was born outside of the US to citizen parents who maintain a permanent residence in the US , the offspring is a Citizen of the United States at Birth.
You’d be surprised at what congressional staff are privy to. Why sometimes even unpaid interns named Monica have access to important information.