JOE SCARBOROUGH: A couple of weeks ago Mika was concerned that he felt the need to have Herman Cain in Georgia. Can I ask why Donald felt the need to have a sheriff that at the front of -- beginning of his rally just trashed it by bringing up the birther controversy again? A controversy Donald has said he wanted to get away from for years. He doesn't need that, does he? Why would he reignite the birther debate when he's in the 40s right now on the way, possibly, to a general election match up?
MARK HALPERIN: Well, I think first of all, he's loyal, and the sheriff has supported him. Second, the Scarborough rule: this guy's moving, what do you say, 50 miles per hour? 150?
SCARBOROUGH: If you move 90 miles an hour -- nobody stops you when you're moving 90 miles an hour.
HALPERIN: Mr. Trump is moving about 110 miles an hour, and so they don't think much about things that a normal campaign would think, oh, this could hurt us.
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SCARBOROUGH: A guy who's said some really deplorable things. At what point does Donald Trump go, OK, I'm going to have to win the general election and stop having these clowns around me?
HALPERIN: Probably the day he's the nominee, if he's the nominee.