Clinton, Sanders spar in debate; GOP argues over delegates

Aired: 4/15/2016 | 0:03:49 | Clip
A day after the most combative Democratic debate yet, Hillary Clinton and Sen. Bernie Sanders found themselves campaigning on opposite sides of the globe. Sanders gave a speech at the Vatican decrying income inequality, while Clinton canvassed in New York ahead of Tuesday’s primary. Meanwhile, Donald Trump and Sen. Ted Cruz traded criticisms over the delegate selection process. John Yang reports.