US Senate Fails to Advance War Powers Measure Regarding Iran Conflict
March 5, 2026 • Al Jazeera
US Senate Fails to Pass Resolution Limiting Trump’s Military Powers in Iran Conflict
A resolution aimed at curbing President Donald Trump’s war powers with Iran was defeated in the US Senate by a vote of 47-52, marking another setback for proponents of limiting the president’s military authority. The defeat comes as a separate resolution is set to be voted on in the House of Representatives.
Lawmakers spent the day debating the resolution, which seeks to assert Congress’s powers to authorize or end Trump’s military actions against Iran. Supporters argue that Trump exceeded his constitutional authority by launching a war alongside Israel without congressional approval.
Senator Tim Kaine argued that the Trump administration could not produce evidence of an imminent threat from Iran, stating that “you can’t stand up and say: This is a pinprick that doesn’t lead to the level that would be characterized as war.” The resolution’s supporters claim that Trump’s actions were unauthorized under Article II of the US Constitution.
The Trump administration has offered various rationales for the military action, including claims that Iran was seeking to rebuild its nuclear program and develop long-range missiles. Secretary of State Marco Rubio stated that Israel planned to attack Iran, which would have led to retribution against US assets in the region. However, Trump later contradicted this claim.
Several Republicans spoke out against the resolution, arguing that the last 47 years of sabre-rattling from Iran justified the president’s military action. Senator James Risch stated that the Constitution gives the president the right and duty to protect the United States, citing Iran’s efforts to rebuild its nuclear energy assets after a US attack in June.
The vote was largely along party lines, with one Republican and one Democrat breaking rank. This defeat marks the latest in a series of war powers resolutions to fail in Congress since the June 21 attack on Iran.
Source: Al Jazeera