The Senate has passed a short-term spending bill to keep the government open until Wednesday and give negotiators more time to work out a longer term measure.
The Senate approved the bill by voice vote.
Lawmakers were seeking a deal on a $1.1 trillion measure financing federal agencies in 2016. Disagreements between Republicans and Democrats over the environment, taxes and Syrian refugees have stalled the measure.
The House is expected to approve the short-term bill on Friday.