MSNBC’s Ari Melber hosts “The Beat” on Monday, July 7, reporting on President Trump’s abuse of power, his escalating feud with Elon Musk, and new developments on his proposed tariffs. Melber also shares an update on the devastating floods in Central Texas. Guests include Jared Bernstein, Mark Leibovich, Juanita Tolliver, and Ta-Nehisi Coates.