Top Lines: Clinton, Biden, Sanford, NRA, and O’Reilly self-reflection

Former Sec. of State Hillary Clinton and Vice President Joe Biden share complimentary remarks; Mark Sanford talks about the “God of Second Chances”; Lawrence O’Donnell goes head-to-head with the NRA’s Asa Hutchinson; and Bill O’Reilly’s feuds over whether he’s in a feud with Rush Limbaugh on today’s “Top Lines.”April 3, 2013