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Top Lines: LaPierre, Trotter, Sean Hannity’s ‘pants,’ and Hagel vs. McCain

02:08

Wayne LaPierre doesn’t see a reason for background checks; Lawrence O’Donnell dishes a conservative smackdown on; Sean Hannity talks about pants; John McCain and Chuck Hagel go mano e mano; and Ted Cruz emerges the Tea Party star to watch in today’s “Top Lines.”