The US Senate has advanced a bipartisan measure aimed at limiting President Donald Trump’s authority to continue military operations against Iran without approval from Congress.
The resolution passed a key procedural vote by 50-47, with several Republicans joining Democrats in a rare challenge to the administration’s Iran war strategy.
The legislation would require Trump to either seek formal congressional authorization for continued military action or begin withdrawing US involvement from the conflict. Supporters argue the Constitution gives Congress — not the president alone — the authority to declare war.
Republican Senators Bill Cassidy, Lisa Murkowski, Susan Collins and Rand Paul were among those who backed the measure, signaling growing concern within parts of the GOP over the expanding conflict and the administration’s long-term strategy.
Multiple US media reports, including AP, Reuters and The Guardian, said the vote reflects increasing bipartisan pressure on the White House as tensions with Iran continue despite ongoing ceasefire and diplomatic discussions.
Although the resolution still faces major hurdles in the Republican-controlled House and would likely face a presidential veto, analysts say the Senate vote marks one of the strongest congressional pushbacks yet against Trump’s handling of the Iran conflict.