MSNBC Live with José Díaz-Balart 03/17/15

Senator: At end of Iran negotiations, ‘Congress does have a role’

President Obama and the White House are trying to clear the way for a nuclear deal with Iran, warning lawmakers not to risk undermine negotiations. Sen. Richard Blumenthal, D-Conn., discusses the progress being made, though tough issues remain. ... more Duration: {{video.duration.momentjs}}