MSNBC's Ari Melber hosts "The Beat" on Tuesday, April 1, and reports on Senator Cory Booker's Senate record for the longest floor speech and outrage over the Trump administration's "error" in deporting a Maryland father with protected legal status. James Carville joins

MSNBC's Ari Melber hosts "The Beat" on Thursday, April 3, and reports on the stock market plunge following President Trump's tariffs. Margaret Carlson, Gov. JB Prtizker, Catherine Rampell and Libby Casey join.