How did South Carolina and Nevada change the 2016 race?

With one more contest down and one less contender in the 2016 race, Donald Trump celebrated his solid victory in South Carolina as the remaining GOP hopefuls prepared for new battlegrounds. Gwen Ifill joins Amy Walter of the Cook Political Report and Tamara Keith of NPR to talk the week in politics, including Jeb Bush’s failed campaign and the candidates’ strategies going forward.