Richard Arenberg, co-author of “Defending the Filibuster: The Soul of the Senate”; Alan Frumin, the recently retired parliamentarian of the U.S. Senate; Akhil Amar, professor at Yale Law School; and MSNBC contributor Victoria DeFrancesco Soto; join Up host Chris Hayes to talk about the prospects of filibuster reform in the U.S. Senate.Dec. 1, 2012
