That has not been established. Senate Resolution 511 had no legal weight behind it, even if it had passed. It could be that McCain is a citizen by statute. This is in no way a diminishment of his service to his country. It would, however, preclude him from ever becoming president under the Constitution.
Do you believe a child born to two US natural born citizens, one serving his country on an accompanied tour, delivered by a US Navy MD in a US military hospital, on a US Naval base would not pass the natural born test?