Members of Congress moved on Monday to force a debate on the scope of President Donald Trump's military campaign against Iran. Senators from both parties are pressing for a War Powers resolution to limit further action, following weeks of escalating strikes and mounting public unease.

Senator Tim Kaine, a Virginia Democrat who has long championed reasserting congressional authority over military action, has signaled his intent to force a floor vote requiring the president to seek approval for continued operations. Republican Senator Rand Paul of Kentucky has echoed concerns that the administration lacks clear legal authorization for a sustained conflict.

The White House has argued that existing authorities permit strikes to protect American forces and interests in the region. White House officials have resisted setting conditions for withdrawal, even as analysts describe the president as boxed in by an unpopular conflict with no defined objective.

The renewed congressional pressure has exposed divisions within Trump's own party, where isolationist-leaning members have grown wary of an open-ended commitment. Democratic leaders in both chambers signaled they would support measures to compel a vote, though passage over a likely presidential veto remained uncertain.

Polling released in recent days has shown declining public support for the campaign, adding to the political stakes as lawmakers weigh the constitutional balance between the executive and legislative branches over the use of force.