The United States Senate has approved a bill aimed at limiting President Donald Trump’s authority to undertake military action against Iran without congressional approval.
The measure passed the Senate on Tuesday by a vote of 50-48, following its earlier approval in the House of Representatives, where lawmakers backed it by a 215-208 margin. The legislation was then forwarded to the Senate for final consideration.
Although Republicans hold a majority in the Senate, four Republican senators joined Democrats in supporting the bill. Those Republicans were Senator Bill Cassidy of Louisiana, Senator Lisa Murkowski of Alaska, Senator Susan Collins of Maine, and Senator Rand Paul of Kentucky.
Two Republican senators—Mitch McConnell of Kentucky and Dave McCormick of Pennsylvania—did not participate in the vote. Meanwhile, Democratic Senator John Fetterman of Pennsylvania voted against the proposal.
The legislation would require the president to seek authorization from Congress before initiating or expanding military operations against Iran. Supporters argue that such oversight is necessary to ensure that decisions involving military force receive broader democratic approval.
Despite the Senate vote, many political analysts believe the measure may face significant obstacles before becoming law. President Trump is expected to veto the bill if it reaches his desk. Overriding a presidential veto would require a two-thirds majority in both chambers of Congress, a threshold that may be difficult to achieve.
Following the vote, Senate Democratic Leader Chuck Schumer said lawmakers had repeatedly attempted to place limits on the president’s military authority regarding Iran. He described the Senate’s approval of the war powers measure as an important step toward restoring congressional oversight of decisions involving armed conflict.
Schumer also criticized the administration’s Iran policy, arguing that prolonged military tensions have imposed significant political and economic costs on the American public.
The vote comes amid ongoing diplomatic efforts between Washington and Tehran. According to reports, representatives of both countries are currently engaged in peace negotiations in Switzerland following a preliminary understanding aimed at reducing hostilities.
The talks, reportedly supported by international mediation efforts, seek to establish a broader agreement within the coming months and reduce the risk of further escalation in the region.
While the Senate’s action signals growing concern among lawmakers over military decision-making powers, the ultimate future of the legislation remains uncertain as it faces potential presidential opposition and additional procedural hurdles.
