MILWAUKEE — Hillary Clinton and Bernie Sanders battled for the crucial backing of black and Hispanic voters in Thursday night's Democratic debate and clashed heatedly over their support for Barack Obama as the presidential race shifted toward states with more minority voters. Clinton, who has cast herself as the rightful heir to Obama's legacy, accused Sanders of diminishing the president's record and short-changing his leadership. "The kind of criticism I hear from Senator Sanders, I expect from Republicans. I do not expect it from someone seeking the Democratic nomination," Clinton said in a sharp exchange at the close of the two-hour debate in Milwaukee. Her biting comments...