While President Obama continues to nominate qualified men and women who would diversify the federal bench, Senate Republicans have shown their commitment to a different kind of diversity: a diversity of methods to block those nominees: Mitch McConnell spearheads the obstruction on the Senate floor, while Chuck Grassley is in charge of committee obstruction. Perhaps least visible is obstruction through abuse of the “blue slip” process, in which nominees are not scheduled for hearings until both of the nominee's home state senators consent.