"I'm John McCain and I approve this message"

CARVILLE: And John McCain, deep down inside my heart, you know, as you know, I've said before I admire McCain. I don't believe he knew about it. I hope somebody asked him. But I refuse to believe that John McCain agreed to airing this spot. I know he says I'm John McCain, I paid for it but they have that in the can and they do it. It I don't think he knew about it. I really don't.

Of course he knows about it. The whole point of forcing candidates to say "I approve this message" is so they'll take responsibility for what gets done in their name. Carville is actually arguing that McCain is an honorable idiot.