Dems plan votes to curb Trump’s Iran war powers authority

Congress is back, and the constitutional test is whether lawmakers can still check presidential war-making in practice. House and Senate Democrats are pressing separate votes on Iran war powers resolutions, arguing that Donald Trump’s recent threats have pushed the country toward conflict without the authorization Congress is meant to provide.

House Democrats tried to force an immediate vote during a pro forma session on April 9, but Republicans cut the session short before the measure could move forward. In the Senate, Tim Kaine of Virginia said Democrats will force a separate vote when the chamber returns, reviving a dispute over the 1973 War Powers Resolution, the post-Vietnam law that Congress has used to challenge unilateral military action by presidents.

The latest push comes after Trump’s recent rhetoric about Iran, including language about striking Iranian civilian infrastructure. That has intensified alarm among lawmakers, legal experts and human rights groups, some of whom warned that such threats could cross into war-crimes concerns. Democrats say Trump is escalating toward war without congressional approval. Republicans say the president needs room to respond to what they describe as a dangerous threat from Iran.

The Senate already weighed a nearly identical resolution last month and rejected it 53-47. Rand Paul of Kentucky was the only Republican to support it, while John Fetterman of Pennsylvania was the only Democrat to vote no. It was the second time in less than a year that Kaine had forced the chamber to confront the issue, after he introduced a war powers resolution on Iran on June 16, 2025, as violence in the Middle East raised fears of deeper U.S. involvement.

House Democrats have also turned the dispute into a broader test of party discipline and leadership. Hakeem Jeffries and other Democrats have urged Speaker Mike Johnson to bring the chamber back from recess, saying Trump’s conduct is “beyond the pale.” Republicans have resisted reconvening, and the failed April 9 maneuver showed how quickly leadership can shut down a vote when the numbers are not there.

Even if either chamber approves a resolution, the effort is likely to stop at Trump’s desk unless Congress can marshal a two-thirds override in both houses. For now, the fight is less about passing a law than proving whether Congress can still force a recorded vote on war, and whether enough Republicans will break ranks to make that vote matter.