The likelihood of a partial government shutdown this weekend appeared to increase on Tuesday, as Democrats in Congress maintained their demand for broad limits on President Donald Trump’s immigration enforcement actions, turning down a White House proposal they called empty and without binding promises.

With Department of Homeland Security funding scheduled to expire after midnight Friday, discussions between Senate Democrats and the White House continued to be deadlocked over the central issue: whether to establish new regulations controlling the behavior of federal immigration officers implementing Trump’s mass deportation plan. Democratic leaders stated they would not supply votes to fund the agency—even on a temporary basis—without new enforceable constraints on those officers.

“The preliminary Republican response is incomplete and inadequate,” Senate Minority Leader Chuck Schumer of New York said Tuesday. “It does not confront America’s worries about ICE’s unlawful behavior.”

Democrats have demanded that any Homeland Security Department funding legislation contain provisions for court-issued warrants before officers can enter residences, visible identification and badge numbers for personnel, restrictions on face coverings, broader deployment of body cameras, updated standards for use of force, and clear prohibitions against racial profiling.

These requirements, Democratic leaders say, seek to align federal immigration enforcement with “the same sensible benchmarks as state and local police agencies,” according to Sen. Catherine Cortez-Masto of Nevada. “Our requests are not extreme,” she added.

Cortez-Masto, who previously defied her party during a shutdown battle over the Affordable Care Act last year, stated she would not back another stopgap funding measure for the Department of Homeland Security unless Republicans engaged in genuine negotiations. Schumer said the White House’s counteroffer, submitted late Monday, provided no meaningful restrictions on ICE and depended on ambiguous promises, such as increasing body camera usage—a measure the administration had already publicized.

Appearing before Congress on Tuesday, acting ICE Director Todd Lyons admitted that despite those declarations, almost 80 percent of ICE agents continue to operate without cameras.

“That’s disgraceful,” Schumer commented afterward. “Despite all the rhetoric about de-escalating the situation, virtually no substantive change has occurred. Thousands of agents are still patrolling the streets, individuals are still being attacked by federal law enforcement. It’s just a matter of time before someone else suffers serious injury or death.”

Republicans, who hold majorities in the House, Senate, and White House, contend that Democrats are seeking modifications that would hinder officers’ ability to arrest and remove undocumented immigrants. Senate Majority Leader John Thune of South Dakota said talks were ongoing but cautioned that an agreement before Friday’s deadline was improbable.

“If additional time is required, which I think it will be, it would be acceptable to obtain an extension of the stopgap funding measure to permit these negotiations to proceed,” he stated, adding, “These TSA and other agency federal workers shouldn’t be used as bargaining chips by Democrats in what could be another government shutdown.”

With talks stalled, Republicans have amplified their public alerts about shutdown repercussions, pointing to potential airport slowdowns, cybersecurity threats, and interruptions to emergency response. However, the actual effect on numerous immigration operations would be restricted. The major domestic policy legislation Trump enacted last year granted ICE a $75 billion funding boost that stays accessible even if new appropriations expire. Consequently, ICE and Customs and Border Protection would keep functioning during a shutdown, as would most of FEMA, which maintains emergency reserves..

“The noticeable effect for most citizens would probably be quite minimal,” Democratic Sen. Richard Blumenthal of Connecticut, a Committee on Homeland Security & Governmental Affairs member, told TIME. He noted that certain workers, such as Coast Guard members and TSA staff, might face temporary pay suspensions, but maintained that methods exist to compensate federal employees during a partial shutdown.

When questioned if the restricted consequences would embolden Democrats to prolong their standoff to achieve their goals, Blumenthal responded: “Well, I believe our bargaining power comes from the American public demanding these changes. Large majorities of Americans are thoroughly outraged and desire transformation. Republicans command the House, they command the Senate, they command the White House. Our sole leverage is our vote.”