Trump’s Birthright Citizenship Ban Blocked in Court

MSNBC's Ali Velshi hosts "The Beat" on Thursday, January 23, and reports on a federal judge's decision to temporarily block Donald Trump's executive order aimed at ending birthright citizenship. Velshi also reports on Trump's plans for retribution and a flurry of other executive orders addressing immigration and public health. Al Sharpton, Kristy Greenberg, Howard Dean, Barbara McQuade, Tara Setmayer, and Zeke Emanuel join.