"Blue Slip Policy"
Hatch has also changed another fundamental Senate rule regarding judicial nominations. In the past, Hatch has been a fervent supporter of the Senate’s “blue slip” policy, which has allowed home-state senators who object to a judicial nominee to delay action in the Judiciary Committee by not returning a nominee’s “blue slip” to the committee. As American Prospect has noted, “it was Hatch, in 1995, who hardened the blue-slip policy to allow a single senator to block a nomination indefinitely.” Indeed, Sen. Hatch made his blue slip policy explicit in 1998 by stating on the blue slips themselves that “
o further proceedings on this nominee will be scheduled until both blue slips have been returned by the nominee’s home state senators.”
Now, however, Hatch has apparently declared a new policy saying that even though a senator’s decision not to return a blue slip would be given great weight, it would not be allowed to prevent Hatch from moving nominees he wants to move. “In other words,” says Hatch, “we can go ahead with certain nominees where you might have a withheld blue slip.” Sen. Barbara Boxer has objected to proceeding on controversial nominee Carolyn Kuhl, but Hatch has scheduled a committee vote on the nomination on Thursday, May 8.--excerpt
you can read more about the rule changes here
http://www.pfaw.org/pfaw/general/default.aspx?oid=10520