Four senators demanded on Thursday that Congress cut off Iran war funding in the short-term bill keeping the federal government open, raising the risk of a partial government shutdown when funding expires on December 11.

Democratic Senators Michael Bennet (Colorado), Tammy Duckworth (Illinois) and Chris Van Hollen (Maryland), with independent Senator Bernie Sanders (Vermont), said the stopgap bill "must include language that restricts the Trump Administration from using appropriated funds to continue his war against Iran". With any stopgap needing 60 Senate votes, their demand puts the war at the centre of the fight.

Key Points

• Bennet, Duckworth, Van Hollen and Sanders said on Thursday that a stopgap bill "must include language that restricts the Trump Administration from using appropriated funds to continue his war against Iran".
• Government funding expires on December 11, 2026, and any stopgap bill needs 60 Senate votes to pass.
• Senator Patty Murray, the top Democrat on Senate Appropriations, said on Tuesday that Democrats did not intend to approve the tens of billions in additional Iran war funding requested this summer.
• The Daily Caller, citing Pentagon estimates, put the Iran war's cost at $47.1 billion as of mid-October.
• Senator Tim Kaine of Virginia is pushing separate language to cut off all war funding unless Congress authorises it; House Democratic Leader Hakeem Jeffries declined to get ahead of bipartisan negotiations.

What Happened

The four senators issued their joint statement on Thursday, November 12, as Congress returned to funding the government past December 11. Their demand is simple: no short-term bill should let the administration keep spending money on the war in Iran. The language they want would bar the use of appropriated funds for the war, forcing the administration to come back to Congress for authorisation if it wants to keep fighting.

The timing gives them leverage: a stopgap needs 60 Senate votes, so it cannot pass on Republican votes alone. By going public before negotiations begin, the four senators have made it much harder for Democratic leaders to agree to a clean funding extension, leaving both parties weeks to find a deal before parts of the government shut down.

Background and Context

The US-Iran war began on February 28, 2026, and is now in its ninth month, with a US naval blockade on Iranian ports and strikes on both sides. The cost is central to the argument: the Daily Caller, citing Pentagon estimates, reported the war had cost $47.1 billion as of mid-October, and the administration asked Congress this summer for tens of billions more.

Congress has tried once to rein in the war: a Senate war-powers resolution to remove US forces from Iran hostilities failed before the midterms, and Representative Ro Khanna has a separate House bill to cut off war funding. Neither has stopped the fighting, so the funding bill gives war critics a new route: stop paying for the war instead of ending it directly. President Donald Trump, meanwhile, said this week that the United States does not need a deal with Iran and would stick with the blockade. Trump's reversal makes the funding fight more important, not less.

Iran War Funding and the December 11 Deadline

The December 11 deadline turns a policy disagreement into a crisis. When funding expires, Congress must pass a new funding bill or watch parts of the government close. A short-term bill usually keeps the government open at current spending levels, but the four senators want this one to stop the flow of money to the war as well.

That is hard for the administration to accept: it would amount to Congress using a must-pass bill to cut off a war the president is still fighting. It is also hard for Democratic leaders to manage: if it is included, the administration's allies may refuse to support the bill; if it is left out, the four senators may refuse to vote for it. Either way, the path to 60 votes gets narrower, and the dispute is tangled up with the wider defence funding fight.

Reactions and Quotes

Senator Tim Kaine of Virginia put the deadline in plain terms. "We have a budget that currently expires on December 11," he said, backing language to cut off all war funding unless Congress authorises it. Kaine's push adds to the four senators' demand, showing a growing bloc in the Senate.

Murray framed the argument in budgetary terms on Tuesday. As the top Democrat on Appropriations, she shapes the party's position on spending bills, and her statement signalled that its spending negotiators are aligned with the war critics. Jeffries kept his distance: the House Democratic leader declined to get ahead of bipartisan negotiations, and Democratic leaders have not yet decided whether to risk a shutdown over it.

Why It Matters

This fight is about who decides whether America stays at war. The Constitution gives Congress the power of the purse, and a funding restriction is lawmakers' most direct way to end a war they did not authorise. If the language survives, it would force the administration either to stop the war or to ask Congress openly for permission to continue it.

It matters, too, because of money and timing. At $47.1 billion and counting, the war is already one of the most expensive American military operations of recent years, and a partial shutdown would close parts of the government just before Christmas. The four senators have not said they would vote down a bill without their language, but by raising the demand publicly they have made a shutdown more likely, and made the war, not the budget, the reason for it.

What Happens Next

Negotiations will intensify in the next four weeks. The first question is whether Democratic leaders adopt the demand as the party's official position. If they do, the language becomes a red line in talks with Republicans and the White House; if not, the four must decide whether to hold their votes.

Watch, too, for Kaine's language and the House, where Khanna's bill gives war critics a second front. A shorter extension would push the fight into January, when the new Congress takes its seats, but would not resolve the disagreement, and the December 11 deadline will bear down on every step.

Frequently Asked Questions

Which senators are demanding the Iran war funding cut? Democrats Michael Bennet (Colorado), Tammy Duckworth (Illinois) and Chris Van Hollen (Maryland), plus independent Bernie Sanders (Vermont), in a joint statement on Thursday, November 12.

When does government funding run out? Current funding expires on December 11, 2026, and any short-term funding bill needs 60 votes in the Senate to pass.

How much has the Iran war cost so far? The Daily Caller, citing Pentagon estimates, put the cost at $47.1 billion as of mid-October 2026, with the administration requesting tens of billions more this summer.

What happens if Congress cannot agree on a funding bill? Parts of the federal government would shut down, starting on December 12 if no bill passes by the deadline.

Has Congress tried to stop the Iran war before? Yes. A Senate war-powers resolution to remove US forces from Iran hostilities failed before the midterms, and Representative Ro Khanna has a separate House bill to cut off war funding.