Priebus, King, Blackburn

Rep. Chris Collins, R-New York, Rep. Marsha Blackburn, R-Tennessee, and Rep. Peter King, R-New York, discuss the reasons they support Donald Trump The dynamic between businessman Donald Trump and House Speaker Paul Ryan (R-Wis.) is explored; an interview with former Secretary of Defense Robert Gates; a political debate featuring Jamelle Bouie, Michael Gerson, Julie Pace and Susan Page