Republicans filibuster a bill they support and helped write.

http://www.politicususa.com/2014/05/17/senate-republicans-hit-time-blocking-bill-unanimously-supported.html

The Republicans insisted on a rider for the Koch Brothers.
The Senate Republicans’ obstruction has reached a point that a professor at George Washington University and leading Senate expert, Sarah Binder, said, “This is what parliamentary warfare looks like. I think the filibuster of the tax extender and energy bills — both carefully negotiated by committee leaders in a bipartisan fashion — suggests yet another deterioration of the Senate’s legislative capacity. The combination of Senate rules and competitive, polarized parties makes the Senate near ungovernable.”One does not have to be a Senate expert to know Republicans have all but ground the upper chamber’s ability to govern to a screeching halt regardless what the issue is.