[bgill]

No, there was no maternity ward on base so he was born in a hospital in Colon.

[ydoucare]

It does not matter where McCain was born, Colon or the CZ. He is a natural born citizen under the doctrine of Jus Sanguinis. Although born outside the sovereign territory of the USA, both his parents were US citizens at the time of his birth, so he is a nbc since he was a citizen at birth.

The USA only leased the CZ from Panama, and it was never considered part of the sovereign territory of the USA. In fact, Congress passed a statute granting citizenship at birth to those persons born in the CZ, just so there would be no doubt as to their nbc status.