I dunno! Good question and how bout cloning?

It really doesn't matter much. As a matter of fact it matters very little. The purpose was to ensure that future generations would not have "spies" come live here and run for high office to take over the government from within. The first 7 presidents were exempt in the constitution and it is clearly addressed. They lived in the U.S. at the drafting of it. If it were not addressed our first president would have been a baby.
Its really not about McCain. I think as a strict constructionist it makes an interesting thread but doesn't change the reality. He is running and nobody is going to stop him from running.
The framers wisdom was sound but they had no way to ever dream of our involvement in foreign lands as they wrote extensively against that very behavior.