important to point out that Senate Democrats also filibustered many of Bush's judicial nominations.
The Democrats had been using the filibuster to prevent the confirmation of conservative appellate court candidates nominated by President George W. Bush. In the Republican-controlled 108th Congress, ten Bush judicial nominees had been filibustered by the minority Democrats. The ten Bush appellate nominees who were filibustered were Miguel Estrada, Priscilla Owen, Charles W. Pickering, Carolyn Kuhl, David W. McKeague, Henry Saad, Richard Allen Griffin, William H. Pryor, William Gerry Myers III and Janice Rogers Brown.
http://en.wikipedia.org/wiki/Gang_of_14Most of Bush's nominees who were filibustered were hard right wing ideologues and in some cases otherwise unqualified. Whereas Caitlin Halligan is moderate and highly qualified. But my point is that the filibuster has been increasingly used to block nominations by presidents of both parties. And the next time a Republican resides in the White House I expect that Democrats will be filibustering some of his or her judicial nominations as well.