One of John McCain's fellow prisoners of war is making an argument that few if any Democrats are willing to air publicly: the Senator's experience in Vietnam does not qualify him to be president. In fact, it may be a reason to vote against him.

Phillip Butler, a highly decorated combat veteran who was imprisoned for eight years in the infamous "Hanoi Hilton," is proclaiming in a brand new political film that McCain's time as a POW makes him a medical and temperamental risk to be handed the responsibilities of commander in chief.

"I think I can say with authority that the Prisoner Of War experience is not a good prerequisite for President," says Butler. "John McCain is not somebody I would like to see with his finger near the red button."