Incoming Senate Majority Leader Mitch McConnell, R-Ky., leaves a closed-door policy meeting at the Capitol on Dec. 2. McConnell says he wants to make the Senate work the way it used to, but not all Republicans are on board. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Caitlin J. Halligan, then a lawyer for New York State, and attorney David Boies spoke in the Court of Appeals in Albany in 2005. On Tuesday, Senate Republicans blocked Halligan's nomination to the U.S. Court of Appeals for the District of Columbia. Jim McKnight /AP hide caption

itoggle caption Jim McKnight /AP