They’ve done it. Senate Republicans have voted to ban earmarks by their caucus in the 112th Congress. The ban was accompanied by a measure calling for a Balanced Budget Amendment. It’s good to see Republicans getting serious about fiscal responsibility.

Update: In stark contrast, almost every Senate Democrat opposes passing a similar measure for their caucus. There are only two announced supporters of a moratorium on the left: Claire McCaskill (D-MO) and Mark Udall (D-CO). McCaskill is up for re-election in 2012 and faces a tough campaign.