WASHINGTON (AP) — President Donald Trump implored the House on Monday to end the partial government shutdownbut neither Republicans nor Democrats appeared ready to quickly approve the federal funding package he brokered with the Senate without first debating their own demands over immigration enforcement operations.

Democrats are refusing to provide the votes House Speaker Mike Johnson needs to push the package forward as they try to rein in the Trump administration’s deportation operations after the shooting deaths of two Americans in Minneapolis. That’s forcing Johnson to rely on his slim GOP majority, which has its own complaints about the package, to fall in line behind Trump’s deal with Senate Democrats.

Voting is expected to begin as soon as Tuesday, which would be day four of the partial shutdown. The Pentagon, Homeland Security and other agencies saw their funding lapse Saturday. And while many operations at those departments are deemed essential, and still functioning, some workers may go without pay or be furloughed.

“We need to get the Government open, and I hope all Republicans and Democrats will join me in supporting this Bill, and send it to my desk WITHOUT DELAY,” the president wrote on social media.

“There can be NO CHANGES at this time,” Trump insisted. “We will work together in good faith to address the issues that have been raised, but we cannot have another long, pointless, and destructive Shutdown.”

The stalemate points to difficult days ahead as Johnson relies on Trump to help muscle the package to passage.

The president struck a deal last week with Senate Democratic Leader Chuck Schumer in which Homeland Security would only be funded temporarily, though Feb. 13, as Congress debates changes to immigration enforcement operations. The Senate overwhelmingly approved the package with the rest of the government funding ahead of Saturday’s deadline.

Democrats demand changes to ICE

House Democratic Leader Hakeem Jeffries made it clear Monday that his side sees no reason to help Johnson push the bill forward in a procedural step, something that the majority party typically handles on its own.

With Johnson facing unrest from his own Republican ranks, Jeffries is seizing the leverage it provides Democrats to demand changes to immigration operations.

“On rare occasions have we stepped in to deal with Republican dysfunction,” Jeffries said at the Capitol.

Democrats are demanding restraints on Immigration and Customs Enforcement that go beyond $20 million for body cameras that already is in the bill. Homeland Security Secretary Kristi Noem announced Monday that officers on the ground in Minneapolis, including ICE, will be immediately issued body-worn camerasand the program would be expanded nationwide as funding is available.

But Democrats are pressing for more. They want to require that federal immigration agents unmask — noting that few, if any, other law enforcement agencies routinely mask themselves in the U.S. — and they want officers to rely on judicial, rather than administrative, warrants in their operations.

They also want an end to roving patrols, amid other changes.

Jeffries said the administration needs to begin negotiations now, not over the next two weeks, on changes to immigration enforcement operations.

Certain Democrats, however, are splintering with the leader, and pushing for quicker passage of the funding package to avoid government disruptions.

Republicans launch their own demands

At the same time, House Republicans, with some allies in the Senate, are making their own demands, as they work to support Trump’s clampdown on immigrants in the U.S.

The House Freedom Caucus has insisted on fuller funding for Homeland Security while certain Republicans pushed to include the SAVE Acta longshot Trump priority that would require proof of citizenship before Americans are eligible to participate in elections and vote. Critics say it would disenfranchise millions of voters.

Late Monday, Rep. Anna Paulina Luna, R-Fla., dropped her demand to attach the voting bill to the funding package after she and Rep. Tim Burchett, R-Tenn., met with Trump at the White House. She posted afterward that it would be better to try to advance that bill separately through the Senate, and keep the government open.

The development was seen as helping Johnson push ahead.

“Obviously the president really wants this,” Majority Leader Steve Scalise said at the Capitol.

“We always work ‘til the midnight hour to get the votes,” Scalise said. “You never start the process with everybody on board. You work through it.”

Workers without pay if partial government shutdown drags on

Meanwhile, a number of federal agencies are snared in the funding standoff after the government went into a partial shutdown over the weekend.

Defense, health, transportation and housing are among those that were given shutdown guidance by the administration, though many operations are deemed essential and services are not necessarily interrupted. Workers could go without pay if the impasse drags on. Some could be furloughed.

Lawmakers from both parties are increasingly concerned the closure will disrupt the Federal Emergency Management Agency, which they rely on to help constituents after deadly snowstorms and other disasters.

This is the second time in a matter of months that federal government operations have been disrupted as lawmakers use the annual funding process as leverage to extract policy changes. Last fall, Democrats sparked what became the longest federal shutdown in history, 43 daysas they protested the expiration of health insurance tax breaks.

That shutdown ended with a promise to vote on proposals to extend the Affordable Care Act tax credits. But with GOP opposition, Democrats were unable to achieve their goal of keeping the subsidies in place. Insurance premiums spiked in the new year for millions of people.

Trump tries to prevent another long shutdown

Trump is already working on an immigration deal to ensure the shutdown doesn’t drag on.

Johnson said he was in the Oval Office last week when Trump, along with border czar Tom Homan, spoke with Schumer of New York as they discussed the immigration changes.

Body cameras, which are already provided for in the package, and an end to the roving patrols by immigration agents are areas of potential agreement, Johnson said.

But Johnson drew a line at other Democratic demands. He said he does not think that requiring immigration officers to remove their masks would have support from Republicans because it could lead to problems if their personal images and private information is posted online by protesters.

And Senate Majority Leader John Thune tapped the brakes on the demand from Democrats to require judicial warrants for officers’ searches, saying it’s likely to be a part of the negotiations ahead.

“It’s going to be very difficult to reach agreement in two weeks,” Thune said at the Capitol.

Democrats, however, said the immigration operations are out of control, and must end in Minneapolis and other cities.

Growing numbers of lawmakers are also calling for Noem to be fired or impeached.

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Associated Press writers Kevin Freking, Matt Brown and Nathan Ellgren contributed to this report.