U.S. Senate Rejects Resolution To End Iran War

The US Senate has rejected a symbolic resolution calling on President Donald Trump to end the US war with Iran, despite mounting public opposition and despite the measure having passed the House in July.

The resolution was supported by Democrats and a small group of Republicans, but most Republicans voted against it. The final tally was 49-50.

Key Vote Split

Only four Republicans joined Democrats in backing the measure: Senators Rand Paul of Kentucky, Susan Collins of Maine, Lisa Murkowski of Alaska and Thom Tillis of North Carolina.

All other Republicans opposed the resolution, including Senators Jon Husted of Ohio and Dan Sullivan of Alaska, who are facing particularly competitive re-election contests. Senator John Fetterman, a Democrat from Pennsylvania, was the only Democrat to vote against the measure.

Economic Fallout And War Backlash

The vote came as Iran has turned the Strait of Hormuz into a war zone in retaliation for military strikes that began in February. Nineteen US service members have died during the conflict.

Higher prices in the United States have also been linked to the escalation, including increases in gas, diesel, fertiliser and food costs.

Public opinion has leaned against the war. An NBC News poll found that 33% of registered voters said the Iran war was worth it, while 62% said it was not worth it. Voters were also more likely to support a candidate who opposes the conflict, by 57% to 24%.

The resolution’s House passage in July ended in a 214-208 vote.

How The Resolution Would Have Worked

Because it is a concurrent resolution, it would have expressed the view of Congress without going to the president for signature or veto. If it had cleared the Senate, it would therefore have amounted to a largely symbolic rebuke of Trump’s continuing use of force.

The text said Congress would “direct the President to remove the use of United States Armed Forces from hostilities against the Islamic Republic of Iran or any part of its government or military”, including potential ground forces in a combat role or used for occupation, unless authorised by a declaration of war or specific authorisation for military force against Iran.

In remarks to reporters, Democratic Senator Tim Kaine said the measure was intended to reaffirm Congress’ role in authorising war. He argued that Congress, not the president, has the constitutional power to declare war.

Kaine said the decision was also about public suffering, citing the loss of service members’ family members and injuries to troops, and pointing to reports of suicide attempts by soldiers following extended deployments.

Growing Republican Dissent, Trump’s Defence

While most Republicans in both chambers have continued to back Trump’s approach, some candidates in closely watched 2026 races have broken with the White House after shifting their positions amid public criticism.

In recent days, Republican Senate candidate Mike Rogers in Michigan and Representative Ashley Hinson in Iowa both called for ending the war, after voting alongside Trump on the conflict for months.

Trump has defended the war as a way to weaken Iran and prevent it from acquiring a nuclear weapon. In a speech at the United Nations on Wednesday, he said the threat posed by “such a vile regime” meant the US faced a reality that some had “preferred to ignore”, arguing that Iran could carry out large-scale terror attacks from behind a nuclear shield.

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25 September 2026