MSNBC's Ari Melber hosts "The Beat" on Thursday, March 7, and reports on President Joe Biden's State of the Union address just hours away. Key Biden strategists Ron Klain, Jen Psaki and Ben Labolt join Melber to discuss: What issues do we expect the president to address? What makes tonight so consequential as we head into a Biden-Trump rematch? Yamiche Alcindor also joins.
