President-elect Donald Trump says once he is in office he will deport two to three million immigrants who have committed crimes. In response, mayors of cities nationwide – from New York to Los Angeles – pledged to not to cooperate with immigration agents. Some universities are considering similar policies. But municipal officials risk losing millions of dollars in federal aid if they don’t cooperate with federal authorities. Trump says that if cities fail to cooperate with Immigration and Customs Enforcement agents, he will block all federal funding for these municipalities. Diane and a panel of guests discuss so-called “sanctuary cities” under a Trump presidency.