RNC meets in Florida, the Sanders movement, a redacted 9-11 report and remembering Prince

On the Webcast, Dan Balz returns from the RNC meeting in Florida to report on Republican preparations for an open convention in July. Plus, Doyle McManus answers the question “What’s next for Bernie Sanders and his movement?” as he continues to fight for the Democratic nomination. Carol Lee reports on 28 redacted pages of a September 11 report. Families of victims want the option to sue the Saudi government for possible involvement. And remembering music icon Prince who died this week at 57. CNBC’s Eamon Javers reports on how he told his 5-year-old son about Prince’s legacy.