Close Up: Asa Hutchinson back in Iowa, Republicans worry about caucus future

On this episode of Close Up, Asa Hutchison is back in Iowa just two weeks after jumping into the presidential race. Why he says former President Trump should consider dropping out.Meanwhile, South Carolina Sen. Tim Scott is one step closer to a run of his own. What he says sets him apart from the other candidates already in the race.And a major caucus curveball, why Iowa Republicans argue Democrats' plans could sink both parties' first-in-the-nation status.