The Last Word with Lawrence O'Donnell 03/19/15

Mitt Romney's biggest regret

Mitt Romney told Katie Couric that he wishes he spent more time reaching out to minorities during his 2012 presidential campaign. He also calls Jeb Bush a "formidable" candidate. David Axelrod, Richard Wolffe and Beth Fouhy join Ari Melber. ... more Duration: {{video.duration.momentjs}}