Obamas close DNC’s second night with rousing Harris endorsement and pointed warnings about Trump 

AP CHICAGO — Warning of a difficult fight ahead, former President Barack Obama and Michelle Obama on Tuesday called on the nation to embrace Kamala Harris in urgent messages to the Democratic National Convention that were at times both hopeful and ominous.  “America, hope is making a comeback,” the former first lady declared. She then tore into Republican Donald Trump, a sharp shift from the 2016 convention speech in which she told her party, “When they go low, we go high.”& “His limited and narrow view of the world made him feel threatened by the existence of two hardworking, highly educated, successful people who also happened to be Black,” Michelle Obama said of Trump.& Barack Obama, the first Black president in U.S. history, insisted the nation is ready to elect Harris, who is of Jamaican and Indian heritage and would be the nation’s first female president. He also called Trump “a 78-year-old billionaire who hasn’t stopped whining about his problems since he rode down his golden escalator nine years ago.”& “It’s been a constant stream of gripes and grievances that’s actually gotten worse now that he’s afraid of losing to Kamala,” he said.& The fiery messages from two of the...