Acting White House chief of staff Mick Mulvaney Mick MulvaneyMick Mulvaney to start hedge fund Fauci says positive White House task force reports don't always match what he hears on the ground Bottom line MORE on Sunday warned that another partial government shutdown is possible if congressional negotiators fail to reach a border security deal that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE finds acceptable by week’s end.

Mulvaney warned on “Fox News Sunday” that “a government shutdown is technically still on the table.”

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He reiterated the warning on NBC’s “Meet the Press,” telling host Chuck Todd that “you absolutely cannot” rule out another shutdown because the president will not sign on to law a deal he finds unacceptable.

“Let's say for sake of this discussion that the Democrats prevail and the hardcore left-wing Democrats prevail,” Mulvaney said, noting that one Democratic lawmaker proposed on Twitter over the weekend that Congress shouldn’t appropriate any money for the Department of Justice.

“Let's say that the hardcore left wing of the Democrat party prevails this negotiation and they put a bill on the president’s desk with, say, zero money for the wall or $800 million, some absurdly low number. How does he sign that? He cannot in good faith sign that,” he added.

Funding for about 25 percent of the federal department will expire after Feb. 15.

Republicans and Democrats on Capitol Hill are at loggerheads over Trump’s request to provide $5.7 billion in funding for a border wall on the U.S.-Mexico border.

Mulvaney said on NBC that he didn’t know whether a deal is possible and noted that there is now a lull in the talks.

“I honestly don't know because it depends on who you listen to, and in fact, I think what we're seeing now in these negotiations, and again, the White House, at the request of all the parties on the Hill, have sort of stepped back,” Mulvaney said when asked how close negotiators are to a deal.

He also blamed divisions among Democrats for the lack of progress, arguing that it has made it difficult to pin down their negotiating position.

“It’s all over the map, and I think it’s all over the map because of the Democrats are all over the map,” he said, pointing to ideological differences between liberals represented by Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) and Rep. Alexandria Ocasio-Cortez Alexandria Ocasio-CortezHouse passes bill to avert shutdown Trump attacks Omar for criticizing US: 'How did you do where you came from?' The Memo: Dems face balancing act on SCOTUS fight MORE (D-N.Y.) and more moderate Democrats, such as Sens. Jon Tester Jonathan (Jon) TesterPence seeks to boost Daines in critical Montana Senate race This World Suicide Prevention Day, let's recommit to protecting the lives of our veterans Filibuster fight looms if Democrats retake Senate MORE (D-Mont.), a negotiator, and Christopher Coons Christopher (Chris) Andrew CoonsMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Del.), a moderate.