U.S. Rep. Max Rose, a Jewish New York Democrat in his first term in Congress, apologized to visibly frustrated constituents at a town hall in Staten Island on Tuesday for not "protecting them" from fellow freshman Democrat Rep. Ilhan Omar's repeated use of "anti-Semitic tropes." Rose's comments came as Minnesota Democrats are seriously considering the prospect of supporting an unprecedented primary challenge against the 37-year-old Omar in 2020, following bipartisan condemnation of several of her remarks, according to officials and state representatives. Earlier this month, the House passed a bipartisan resolution condemning hate of all kinds in the wake of Omar's comments. But Democrats kept Omar's...