Obama night at the DNC: Barack, Michelle rouse crowd for Kamala Harris | WATCH

Former US President Barack Obama returned to the national stage on Tuesday night to boost his longtime Democratic ally Kamala Harris in her 11th-hour presidential bid against Republican Donald Trump. America’s first Black president, Obama has thrown his considerable political capital behind Harris as she seeks to make history herself on Nov. 5 as the first woman and first Black and South Asian person to be elected U.S. president.