I can speak with authority on this subject. It applies to my son, an American Citizen, born in the US Naval Hospital Cubi Point, and also Olongopo Zambales, Philippines. He also had Philippine Citizenship until 21 at which time unless application was made, it was dropped.
We lived for a while in Manila and the wives of Navy Civilians like me and actual Naval personell had to make the hard trip to Subic to give birth in the Naval Hospital, American soil.
Some chose to give birth at the hospitals in Manila but in doing so, disallowed their child the Presidency. Unless you knew the road to Subic from Manila, you can't imagine the sacrifice these moms made to assure their kids a crack at the big job.
My wife had no such choice because we were transferred to Subic Bay prior the birth day.
If McCain was born in a military hospital he was on US soil and is ok.
Unfortunately, you are still incorrect. Any child born to American parents (who have spent time in the US) is a natural born American citizen.
McCain was born in the Canal Zone in Gorgas Hospital (Pacific Side). It was an American civilian hospital.
Yes, he is an American citizen.
Yes, according to Panamanian law, he is also a Panamanian citizen having been born in “Panama.” He can come today and pick up his Panamanian citizenship documents in 24 hours. According to Panamanian law, once a Panamanian, always a Panamanian. One cannot renounce one’s citizenship.
Yes, he can also run for president of Panama because he is also a Panamanian.