Senate Republicans killed three major measures via filibuster threats today: habeas corpus for enemy combatants, a House member for DC, and the Webb Amendment on troop rotations. It is part of an unprecedented use of the filibuster by Senate Republicans in the 110th Congress. I don't use "unprecedented" lightly. McClatchy ran the numbers, as we noted back in July (thanks to Kevin Drum for the reminder). At that time, Republicans were on pace this term to nearly triple the previous record high for the use the filibuster in the modern era. It's worth taking a look.