U.S. President Obama is expected tonight to lay out the stakes of a politically divided nation and how to bridge across the differences, according to a New York Times analysis of his DNC speech. Aides also tell the Times that Obama will mention Donald Trump "a handful of times" and will devote the majority of his speech to Hillary Clinton, making the argument that only Clinton can help the nation rise above the partisan divides. Obama is slated to speak tonight at 10:30 p.m. ET,