Former New Orleans Mayor Mitch Landrieu says impeachment inquiry 'has now risen to a level of a substantial case that can be made'

Former New Orleans Mayor Mitch Landrieu joins Yahoo News Editor in Chief Daniel Klaidman and Chief Investigative Correspondent Michael Isikoff to talk about the impeachment inquiry into President Trump. Landrieu says that at first he didn’t think it was warranted after the Mueller report came out, but “when the Ukraine matter raised up its head, I changed.”