In Romney's case, I could never be quite sure. Has anyone ever held a mirror under his nose? See if he makes noise when kicked in the cullions?
Now McCain is another story. Him, feel free to condemn. In the AF when he was in the Navy, I can tell you it is very unusual for a Navy pilot to become famous in the AF. But everyone knew Lt. McCain.
"Did you hear about the Navy guy who keeps getting lost ... over the Chesapeake?" "5 American aircraft and several probables doesn't make you an ace, McCain." "AWOL" "Drunk and Disorderly" "Fighting in bars," "Improper Uniform." etc. ad nauseam. The instructors who tried to wash him out of flight school were never heard from again. Sure helps to be the black sheep in a family full'o'admirals!
When he was shot down and captured, maintenance officers throughout the fleet breathed a sigh of relief. Had the NVA known about him, they would have shipped him back the next day. Instead, becoming a POW was the highlight of his "career." Otherwise, he would have wound up after 28 years, as the Lt. Commander in charge of soldering old mess kits at Twenty-nine Palms, or in the Brig at Portsmouth. Wadda bozo! Perfect Republican Candidate ... right up there with Bob (Viagra) Dole.
I always operated with the assumption that he was Obama's clone — because of this I'm not surprised about what he says/does.