"We continue to work on a process to complete action on this bill," said Reid, speaking from the Senate floor. "We are going to have to do that … We can't do that unless we get some basic cooperation, and it's a shame if we can't move forward on this bipartisan bill."

Reid then threatened to close debate by filing cloture if a reasonable agreement is not quickly reached. 

"If we can't find an agreement to move forward on this bill, I have no alternative but to try to stop the filibuster on that," he said.

It appeared on Wednesday there had been a breakthrough when Reid announced that Democrats would allow a vote on an amendment offered by Sen. Roy BluntRoy Dean BluntRussian assault on 'American idea' enables Trump to take tough action Eleven lawmakers have used campaign funds to pay NRA dues: report Kimmel writer tweets amount NRA has given lawmakers in response to shooting prayers MORE (R-Mo.) that would reverse the Obama's administration's controversial contraception decisions. At the time, Reid also suggested that there could be a number of votes on non-germane amendments on Thursday and that the Senate could complete work on the bill by the end of next week. 

The $109 billion spending bill has officially been pending since Feb. 9, when the Senate voted 85-11 to bring it to the floor.