MSNBC's Ari Melber hosts "The Beat" on Friday, January 5, and reports on SCOTUS's decision to hear Donald Trump's ballot case. Plus, John Leguizamo joins for the latest "Fallback Friday" installment. Colorado's Secretary of State Jena Griswold, Renato Mariotti and Rick Hasen also join.

MSNBC's Ari Melber hosts "The Beat" on Tuesday, January 9, and reports on Donald Trump's immunity argument and the Iowa caucuses. Priscilla Thompson, Emily Bazelon, Leslie Caldwell and James Schultz join.