It has long been my understanding that citizenship is a characteristic of nature, not of the location you happen to be when you are born. Just as an unborn child is a person even before it emerges, so is an unborn citizen still a citizen before it is born.
That characteristic which makes a child both a person and a citizen is that which is acquired from it's mother and father.
John McCain was born to citizen parents in the service of our nation, and he himself fought and suffered on our behalf. I do not regard him as having any taint of foreign influence about him, and that is after all, the salient point behind article II anyway.
Too bad it doesn’t say what you feel it should say.