The US Congress convenes this week to consider measures aimed at limiting President Donald Trump’s authority to expand military operations against Iran without explicit approval from lawmakers.
In the Senate, Tim Kaine has introduced a resolution invoking the War Powers Resolution of 1973, a law enacted during the Vietnam War to curb presidential war-making powers. If passed, the measure would require the termination of US armed forces’ involvement in hostilities against Iran unless Congress authorizes continued engagement. Kaine said the Constitution mandates a congressional vote before entering war and urged lawmakers to return to Washington immediately.
House Lawmakers Split on Approach
Meanwhile, in the House of Representatives, Ro Khanna and Thomas Massie have filed a bipartisan resolution directing the president to withdraw US forces from hostilities absent congressional approval. However, a more cautious bloc led by Josh Gottheimer has stopped short of demanding an immediate halt, instead calling for compliance with existing law and consultation with Congress.
The debate follows coordinated US and Israeli strikes on Iranian military and political targets, an escalation that has reportedly resulted in American casualties and heightened fears of wider regional conflict.
Party Divisions Shape Outcome
Democratic leaders, including Chuck Schumer and Hakeem Jeffries, have pressed for classified briefings and formal votes, emphasising congressional oversight. Progressives such as Bernie Sanders and Jeff Merkley have openly opposed the operation. Yet divisions persist, as John Fetterman signalled he would reject the resolution.
Among Republicans, support remains firm. Tom Cotton predicted strong backing for the president, although Massie argued the conflict contradicts the “America First” doctrine.
Even if approved, Congress would likely need a two-thirds majority to override a presidential veto — a steep hurdle in a divided legislature.
