With a shutdown looming, U.S. Sen. Bernie Sanders on Thursday offered his Democratic colleagues a blueprint for how to reject Republicans’ stopgap measure, which would fund the government through the end of September but, as critics warn, give President Donald Trump—and billionaire Elon Musk—broad discretion over spending priorities.

“Since President Trump has been in office we have seen chaos, shock, and heartbreak,” Sanders (I-Vt.)—who sought the Democratic presidential nomination in 2016 and 2020—said in a statement explaining his plan to vote “no” on the House-approved package.

“We have seen oligarchs take over our government and the wealthiest person in the world decimate programs that provide support for a struggling working class,” Sanders said, pointing to Trump and Musk’s recent attacks on the Department of Education, Department of Veterans Affairs, and Social Security Administration.

“We have seen a move toward authoritarianism where the president is illegally usurping the powers of Congress, while his administration challenges the role of the federal courts in constraining unconstitutional administrative actions,” he continued, echoing his recent Senate floor speeches and national tour.

The continuing resolution (CR) passed Tuesday by 216 House Republicans and Rep. Jared Golden (D-Maine) “will provide a blank check for the administration and Mr. Musk to continue their savage war against working families, the elderly, children, the sick, and the poor in order to lay the groundwork for massive tax breaks for the billionaire class,” Sanders warned.

“This legislation will also provide a green light for the administration to continue its illegal and unconstitutional activities,” he concluded. “This is a bill I cannot support. Instead, the Senate must pass a 30-day CR so that all members of Congress, not just the House Republican leadership, can come together and produce legislation that works for all Americans, not just the few.”

Sanders’ statement came amid fears that Senate Democrats may cave to the GOP plan in exchange for a certain-to-fail vote on an alternative bill. Although Republicans control the upper chamber, they lack a filibuster-proof majority—meaning at least 60 senators have to agree to hold a vote on most legislation, including a CR on funding.

Progressives in the House who stood against the Republican package urged Senate Democrats to continue the fight to actually pass an alternative spending bill that doesn’t further empower Trump and Musk—such as a “clean” 30-day CR that Senate Minority Leader Chuck Schumer (D-N.Y.) and other key members of the party have suggested.

“Some Senate Democrats are being tempted to pretend to fight the Trump-Musk funding bill today, then quietly agree to give up on blocking it,” Congressional Progressive Caucus (CPC) Chair Greg Casar (D-Texas) said on social media Thursday. “That would be a disastrous decision. Voting for cloture on a bill that allows Musk and Trump to steal from taxpayers is the same as voting to allow Musk and Trump to steal from taxpayers. Everything is on the line. Democrats weren’t elected to put up a fake fight.”

CPC Chair Emeritas Pramila Jayapal (D-Wash.) similarly declared that “Democrats need to stand up and fight for the American people,” and expressed support for the 30-day resolution.

Progressive voices outside of Congress are also calling on Democrats to keep up the fight ahead of the potential shutdown, which would occur if a deal isn’t reached before the end of Friday.

“Leader Schumer and Senate Democrats must insist on a clean 30-day funding bill,” Public Citizen and Indivisible said in a joint statement. “Helping Republicans pass their harmful, partisan slush-fund for Trump and Musk would correctly and needlessly redirect the public’s outrage from Republicans to Democrats. Even those who would be most directly harmed by a government shutdown—federal employees—have said they are willing to risk a Republican-created government shutdown instead of allowing the ongoing lawless dismantling of government, and they’re right.”

“All Americans should be clear: The Republican long-term CR is not a clean continuation of previous funding commitments. It would enable Trump and Musk to claim much greater authority to violate the separation of powers and refuse to spend appropriated funds,” the groups continued. “The Republican long-term CR also would impose draconian spending cuts on Washington, D.C. and impose pointless, devastating harm on children in the nation’s capital.”

“If Republicans disregard the well-being of the country and choose to shut down the government over their failure to pass their destructive funding bill,” they vowed, “we and our partners will mobilize across the country to ensure the anger of voters is directed at the culprits of this manufactured crisis, in defense of the vital programs that Musk’s MAGA allies are eager to destroy for the sake of greater corporate profits.”