
Senate Republican Majority Leader Mitch McConnell has scheduled a vote at noon Monday on ending the U.S. government shutdown.
Lawmakers would be voting on a measure to fund the government for at least another three weeks.
Leaders and members from both parties spent all day Sunday meeting and negotiating and looking for a way to end the impasse on immigration which forced the government to close down.
But it is unclear exactly how much progress has been made.
Earlier Sunday, Maine's Susan Collins, a Republican moderate told reporters a group of 22 of her colleagues are determined to find a way out.
South Carolina Republican Lindsay Graham told reporters there needs to be what he calls an "understanding" from Republican Majority Leader Mitch McConnell that after a temporary funding bill is passed, the Senate would then tackle immigration as part of a longterm spending bill.
The House passed a budget to fund the federal government late last week.
But Senate Democrats have so far refused, demanding protection from deportation for the so-called "dreamers," young immigrants illegally brought to the United States as children.
Republicans say they will not discuss immigration until the government reopens.
Each side blames the other for the government shutdown that has suspended all but essential services because there is no authority to spend any funds.