The US Senate voted on Tuesday to advance a war powers resolution aimed at forcing President Donald Trump to end US military involvement in Iran, with four Republicans breaking ranks with the president. The vote was 50-47, marking the eighth such attempt since the conflict began in February.
Republican Defections
Republican Senators Rand Paul, Susan Collins, Lisa Murkowski, and Bill Cassidy voted in favor of advancing the measure. Democratic Senator John Fetterman voted against it, while three Republicans missed the vote. Cassidy, who lost his Republican primary for renomination over the weekend after facing opposition from Trump, supported the motion for the first time after repeatedly voting against it earlier.
“While I support the administration’s efforts to dismantle Iran’s nuclear program, the White House and Pentagon have left Congress in the dark on Operation Epic Fury,” Cassidy said in a statement. “In Louisiana, I’ve heard from people, including President Trump’s supporters, who are concerned about this war. Until the administration provides clarity, no congressional authorization or extension can be justified.”
The other Republicans who crossed party lines — Paul, Murkowski, and Collins — had supported similar efforts before.
Democratic Response
Senate Minority Leader Chuck Schumer called the vote a sign that pressure on Republicans was growing. “Vote by vote, Democrats are breaking through Republicans’ wall of silence on Trump’s illegal war,” Schumer said. “For more than 80 days, Trump has dragged America into a costly, chaotic conflict with no plan, no objective, and no legal authority.”
Why It Matters
The vote is largely symbolic for now, but it highlights concerns among lawmakers that Trump may have exceeded his constitutional authority. Democrats have contended that the conflict breaches the War Powers Resolution, which prevents a US president from deploying troops for over 60 days without approval from Congress.
Opponents of the war argue that the 60-day limit ended on May 1. The White House, however, claims the timeline restarted on April 8 following the ceasefire announcement, effectively giving President Donald Trump additional time to continue military operations against Iran without congressional clearance. Even after the ceasefire, the US Navy has continued operations near the Strait of Hormuz, maintaining a blockade aimed at Iranian ships.
For the War Powers Resolution to be enforced, the measure would need support from two-thirds of lawmakers in both the Senate and the House of Representatives — an uphill task given the Republicans’ narrow majority in Congress.
Diplomatic Engagement
At the same time, diplomatic engagement between Washington and Tehran has continued. Iran is said to have proposed a 14-point plan demanding reparations, relief from sanctions on oil exports, and recognition of its control over the Strait of Hormuz. The US response reportedly called for tighter restrictions on Iran’s nuclear activities, including handing over most of its alleged 440-kg stockpile of uranium enriched to 60 per cent.
Although the ceasefire has mostly held, both sides have repeatedly accused each other of violating the agreement and negotiating in bad faith.
