U.S. Senator Bernie Sanders (I-Vt.), who's now on a multi-state tour to galvanize grassroots resistance to the Trump agenda, can boast of high popularity, but he's taking flak for backing an anti-choice mayoral candidate. Speaking Thursday at a sold-out event at the University of Nebraska Omaha's Baxter Arena, Sanders rallied support for Heath Mello, the Democrat who's hoping to unseat Omaha's Republican Mayor Jean Stothert next month.