Congress Debates Iran War as Votes Loom

Senate and House to vote on war powers resolution as Trump administration scrambles for support

Published on Mar. 4, 2026

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The U.S. Senate is headed towards a vote on Wednesday on President Donald Trump's decision to embark on a war against Iran, an extraordinary test in Congress for a conflict that has rapidly spread across the Middle East with no clear U.S. exit strategy. The legislation, known as a war powers resolution, gives lawmakers an opportunity to demand congressional approval before any further attacks are carried out. The Senate resolution and a similar bill being voted on in the House later this week face unlikely paths through the Republican-controlled Congress and would almost certainly be vetoed by Trump even if they were to pass.

Why it matters

The votes in Congress this week represent potentially consequential markers of where lawmakers stand on the war as they look ahead to midterm elections and the consequences of the conflict. The attack on Iran represents an open-ended conflict that is already ricocheting across the region, unlike Trump's previous military campaigns, and is testing Republicans who are used to operating in a party dominated by Trump's promises of keeping the U.S. out of foreign entanglements.

The details

After launching a surprise attack against Iran on Saturday, the Trump administration has scrambled to win support for the conflict. Secretary of State Marco Rubio told reporters the U.S. is 'not going to put American troops in harm's way,' but six U.S. military members were killed over the weekend in a drone strike in Kuwait. Trump has also not ruled out deploying U.S. ground troops, and his goals for the war have shifted from regime change to stopping Iran's nuclear capabilities and crippling its navy and missile programs.

  • The Senate is headed towards a vote on Wednesday, March 4, 2026.
  • The House is scheduled to vote on a similar war powers resolution on Thursday, March 5, 2026.

The players

Donald Trump

The President of the United States who decided to embark on the war against Iran without congressional approval.

Chuck Schumer

The Senate Democratic leader who argued this is 'not a necessary war' and 'a war of choice.'

John Thune

The Senate Majority Leader who said the Trump administration is 'achieving great success' so far in the conflict.

Marco Rubio

The Secretary of State who told reporters the U.S. is 'not going to put American troops in harm's way.'

Tim Kaine

The Virginia Democrat leading the effort to advance the war powers resolution to restrain Trump's military action against Iran.

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What they’re saying

“Wars without clear objectives do not remain small. They get bigger, bloodier, longer and more expensive.”

— Chuck Schumer, Senate Democratic leader (mysanantonio.com)

“We are not going to put American troops in harm's way.”

— Marco Rubio, Secretary of State (mysanantonio.com)

“I think they are achieving great success with what they've done so far.”

— John Thune, Senate Majority Leader (mysanantonio.com)

“Nobody gets to hide and give the president an easy pass or an end-run around the Constitution. Everybody's got to declare whether they're for this war or against it.”

— Tim Kaine, Virginia Democrat (mysanantonio.com)

“Our young men and women's lives are on the line.”

— Gregory Meeks, Top Democrat on House Foreign Affairs Committee (mysanantonio.com)

What’s next

The Senate is scheduled to vote on the war powers resolution on Wednesday, March 4, 2026, and the House is scheduled to vote on a similar resolution on Thursday, March 5, 2026. The outcome of these votes will be a key indicator of congressional support for the conflict with Iran.

The takeaway

The upcoming votes in Congress on the war powers resolution represent a pivotal moment as lawmakers grapple with the open-ended conflict with Iran that has rapidly escalated, testing the balance of power between the legislative and executive branches over the decision to go to war.