The Republican-majority U.S. Senate backed legislation on Tuesday (June 23) to halt U.S. military action against Iran, but it was not immediately clear how it would affect the conflict as President Donald Trump's administration negotiates a peace agreement with the Islamic republic.

The Senate voted 50-48 in favor of the concurrent resolution, which passed the House of Representatives early this month, reflecting growing concern even among some of Trump's Republicans about the unpopular conflict that began on February 28.

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U.S. Senate votes to halt Iran war, bucking Trump

VIDEO SHOWS: US SENATE VOTES ON RESOLUTION TO HALT U.S. MILITARY ACTION AGAINST IRAN

RESENDING WITH COMPLETE SCRIPT

SHOWS: WASHINGTON DC, UNITED STATES (JUNE 23, 2026) (SENATE TV - Access all)

1. US SENATE VOTES ON RESOLUTION TO HALT U.S. MILITARY ACTION AGAINST IRAN, GRAPHIC READING (English) “YEA 50 NAY 48"

2. WHITE FLASH

3. (SOUNDBITE) (English) SENATE DEMOCRATIC LEADER, CHUCK SCHUMER, SAYING:

"Madam President, for years, Trump promised to put maximum pressure on Iran, but he ended up delivering maximum confusion, maximum chaos, maximum cost to the American people with his disastrous war. Every second this war continues, the costs to the American people go up. And this is the 10th time Democrats have forced Republicans to vote on a War Powers resolution to end the war. Time after time, the vast majority of Senate Republicans sided with Trump and his war instead of the American people. The American people have paid the price for Trump's historic blunder in Iran. It'll go down in the history books as one of the worst foreign policy forays America has ever made, or any country has ever made. It is so, so ridiculous, costly, with no goals, achieving virtually none of the goals that Trump set forward or virtually none."

4. WHITE FLASH

5. (SOUNDBITE) (English) SENATE DEMOCRATIC LEADER, CHUCK SCHUMER, SAYING:

"Trump, Vance (Vice President JD Vance), and Rubio (Secretary of State Marco Rubio) refused to come before the American public and answer questions. No one knows what side deals there are. No one knows what actually was said, no one knows the details of this so-called understanding. And the reason is they're probably afraid to show it because they know how badly they have done. Trump won't brief Congress. Trump won't defend his deal. Trump won't end his war. But Democrats will keep forcing this vote, and we're going to keep doing it because only Congress has the power to take this nation to war, and this one must end. In fact, Trump never, ever should have started it."