For the first time since the War Powers Resolution was enacted in 1973, both chambers of Congress have approved a concurrent resolution directing a president to end military action. The measure, which instructs President Donald Trump to halt U.S. involvement in hostilities with Iran, passed the Senate recently, following approval by the House of Representatives.
While a concurrent resolution expresses the will of Congress, it does not require the president's signature and carries no legal binding, unlike legislation. In 2019, Trump vetoed a joint resolution that sought to remove armed forces from hostilities in the Yemeni civil war. Middle East analyst Laura Blumenfeld described the vote as "more of a slap on a wrist than a handcuff, because it has no legal binding." However, she also noted that it "reflects the American people's sentiments."
Experts suggest that President Trump is likely to ignore the resolution, as have all presidents since the War Powers Resolution's inception. Legal challenges are also not expected to yield significant results. "As a practical matter, it probably doesn't make much difference," said Michael Glennon, a law professor at Tufts University. "It's far more significant politically." Glennon highlighted the political importance, stating, "You have both houses of Congress, which are under the control of the Republican Party, standing up to the president and saying no. That's almost unprecedented."
The resolution's passage is seen by some as a watershed political event, particularly given Trump's history of retribution against dissenting Republicans. However, the long-term implications for congressional opposition remain uncertain. "I wouldn't overreact to the significance of this vote," said Jonathan Entin, a constitutional law professor at Case Western Reserve University. "It's important... but I'm not sure that we should view it as a sign of consistent conflict, or additional conflict, with the president."
The upcoming November midterm elections may influence some Republicans' actions. A few may seek to signal independence from Trump to appeal to independent voters, while many others may be hesitant to alienate the president's base. "The president has overwhelming support among Republicans. A candidate who pushes back too much might risk alienating strong Republican voters who think they aren't committed enough," Entin explained.
The House of Representatives previously passed the measure with four Republicans joining all Democrats in a 215-208 vote. In the Senate, four Republican senators—Rand Paul, Lisa Murkowski, Susan Collins, and Bill Cassidy—voted with Democrats. Democratic Senator John Fetterman was the sole member of his party to vote against it.
A White House official told the BBC that with a ceasefire agreed upon on April 7, there are no active hostilities from which U.S. forces need to withdraw. The official also attributed the measure's passage to the absence of two Republican senators, Mitch McConnell and Dave McCormick. This vote is among recent instances where some Republicans have resisted Trump's initiatives, including rejecting his proposed "anti-weaponisation" fund and approving aid for Ukraine.
The current vote was the tenth time Senate Democrats have called for a war powers vote since the conflict began. Federal law requires congressional approval for military actions exceeding 60 days. U.S. and Israeli strikes on Iran commenced on February 28, though the Trump administration argued that the April ceasefire reset the 60-day clock. The White House can extend this deadline by an additional 30 days for national security reasons. Currently, the U.S. and Iran are working towards a broader agreement on ending Iran's nuclear program under a memorandum of understanding signed last week, with 60 days allocated for negotiations.