Biden: GOP reluctance to debate gun bill "almost mind-boggling" Vice President Biden said that Republicans' threat to filibuster proposed gun legislation and prevent the bill from coming up for debate is "mind boggling," explaining, "You've got 13 senators, including the minority leader, saying, 'I will filibuster a proceeding on dealing with this national tragedy'...now maybe between now and the time it gets to the floor...they will have seen the light."