President Trump's spokesman on Monday stressed that administration officials are confident the government won’t shut down on Friday when it runs out of money, but refused to guarantee it will remain open.

“I can’t guarantee,” White House press secretary Sean Spicer told reporters, adding that budget director Mick Mulvaney, who is leading the negotiations with lawmakers, has made “very positive” steps in the past several days.

“We very confident the government is not going to shut down,” Spicer said.

The White House and the Republican-controlled Congress have come to the brink of a shutdown, which could occur before President Trump’s 100th day in office if both sides can’t strike an agreement by midnight on Friday.

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The Trump administration is seeking to use the deadline to secure money for the president’s proposed wall at the U.S.-Mexico border as well as increased military spending.

Spicer refused to say whether Trump would sign a government funding bill without money for the wall.

“They’re currently negotiating,” he said. “We feel very confident that they understand the president’s priorities and that we’ll come to an agreement by the end of Friday.”

Trump is pushing for the border wall money in part to secure a victory in his first 100 days in office, a traditional benchmark used to judge the early success of presidents.

A shutdown, however, would be seen as a major failure, especially since Republicans control both ends of Pennsylvania Avenue.

Spicer tried to project a sense of calm about the talks, indicating the president has not become personally involved as he did in the final days of his push to get a vote on a healthcare overhaul last month, which ultimately failed.

“We’re not at a position now where he’s actively engaging,” the spokesman said.