A spokesperson for Coburn said that the senator is looking into multiple options to keep the Senate from proceeding with the bill.
"He'll use every procedural tool he can to force a full and open debate on our national defense. Shutting off debate on Congress' most important area of responsibility is ludicrous," spokesman John Hart told Roll Call.
In order to pass the defense bill before Congress leaves for recess before the end of the year lawmakers are looking to push the bill through both chambers quickly without considering amendments like Sen. Kirsten Gillibrand's (D-NY) measure on sexual assaults in the military. Those proposals would then be considered separately.