Clinton on track, Trump a ways to go

5:31 AM ET Wed, 16 March 2016

CNBC's John Harwood reports on last night's primary results where Hillary Clinton sweeps all five primaries, while Donald Trump takes four of the five states up for grabs and John Kasich wins his home state of Ohio. Also Marco Rubio announces he is leaving the race, and John Harwood talks to House Speaker Paul Ryan about whether he is considering a run for the White House.