The staff and the F.B.I. work to combat a threat to firebomb black churches in Tennessee on Christmas Eve; accompanied by Jordan, Leo testifies before the House committee probing Bartlet's failure to disclose his M.S. during the presidential campaign; Sam and Josh try unsuccessfully to get Leo out of the line of fire of a Congressman on the committee intent on destroying Leo to advance his own political career; surprisingly, Leo receives a last minute reprieve at the hands of the Majority Counsel and the committee Chair.
Elenco: Martin Sheen , Dulé Hill , Bradley Whitford , Alan Alda , Allison Janney , Janel Moloney , Jimmy Smits , John Spencer , Joshua Malina , Mary McCormack , Moira Kelly , Richard Schiff , Rob Lowe , Stockard Channing .