Bernie Sanders isn't yet endorsing presumptive Democratic candidate Joe Biden but says he willdo "everything I can to make sure Donald Trump will not be re-elected." During his first interview since suspending his campaign on Wednesday morning, the Vermont senator emphasized on The Late Show on Wednesday night that he is trying to work with Biden and his campaign before giving it an official endorsement. "t's no great secret that Joe Biden's politics are different from mine," he told host Stephen Colbert as they spoke to each other via video chat.