10:06 am today

US lawmakers plan Iran war powers vote as Trump weighs strikes

10:06 am today

By Patricia Zengerle, Reuters

US President Donald Trump speaks to the press as workers install a large flag pole on the South Lawn of the White House in Washington, DC on June 18, 2025. President Trump left the question of whether the United States will join Israeli strikes on Iran up in the air Wednesday, as he said that Tehran had reached out to seek negotiations. "I may do it, I may not do it. I mean, nobody knows what I'm going to do," Trump told reporters as he supervised the installation of a new flagpole on the White House South Lawn. (Photo by Brendan SMIALOWSKI / AFP)

US President Donald Trump. Photo: AFP / Brendan Smialowski

The US Congress could vote as soon as next week on whether to block President Donald Trump's ability to strike Iran without lawmakers' approval, as the US military prepares for a potential serious conflict with Iran if diplomatic efforts fail.

Members of Congress, including a few of Trump's fellow Republicans as well as Democrats, have tried - and failed - repeatedly to pass resolutions that would bar Trump from military action against foreign governments without lawmakers' approval.

The US Constitution grants Congress, not the president, the power to send US troops to war, except for limited strikes for national security reasons. Reuters reported last week that the military is preparing for the possibility of sustained, weeks-long operations if Trump orders an attack.

Trump's Republicans hold slim majorities in both the Senate and House and have blocked the resolutions, arguing that Congress should not restrict Trump's national security powers.

Democratic Senator Tim Kaine of Virginia and Republican Senator Rand Paul of Kentucky filed a Senate resolution late last month to block hostilities against Iran unless explicitly authorised by a congressional declaration of war.

"If some of my colleagues support war, then they should have the guts to vote for the war, and to be held accountable by their constituents, rather than hiding under their desks," Kaine said in a statement on Friday (US time), as US military assets moved toward Iran.

An aide to Kaine said on Friday there was no timetable yet as to when the Senate might take up the resolution.

In the House of Representatives, Republican Thomas Massie of Kentucky and Democrat Ro Khanna of California said they planned to force a vote on a similar resolution next week.

"Trump officials say there's a 90 percent chance of strikes on Iran. He can't without Congress," Khanna said in a post on X (formerly Twitter).

- Reuters