MSNBC's Ari Melber hosts "The Beat" on Friday, August 1, and reports on President Trump's trade war entering a new phase and his firing of the Commissioner of Labor Statistics after the latest report fell far short of expectations. Melber also covers Kamala Harris' first major interview since the election and renewed scrutiny over Trump's ties to Jeffrey Epstein. Plus, hip hop duo Clipse join the show, along with Bill Kristol, Margaret Carlson and Paul Krugman.