Coverage dated May 18, 2026 to May 19, 2026

Senate advances resolution to limit Trump's Iran war powers for first time, after 4 Republicans defect

Headline from CBS News

Four Republicans voted with nearly all Democrats to advance the Iran war powers measure, with GOP Sen. Bill Cassidy joining the Republican defectors for the first time.

CBS News's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Earlier updates in this story

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Reports & sources

27 articles, oldest first.

FOX 29 Philadelphia
Iran latest: Senate bill forcing vote on Iran war advances after Republican flips following primary loss (opens FOX 29 Philadelphia)
Published May 18, 2026
FOX 29 Philadelphia's feed description
A Republican senator's decision to support a bill that would require President Donald Trump to get congressional support to continue the Iran war proved crucial Tuesday as the Senate voted to advance the measure.
NBC 5 Dallas-Fort Worth
Senate advances bill aimed at ending Iran war as Cassidy, after primary loss, flips to support it (opens NBC 5 Dallas-Fort Worth)
Published May 18, 2026
NBC 5 Dallas-Fort Worth's feed description
Since Trump ordered the attack on Iran at the end of February, Democrats have forced repeated votes on war powers resolutions.
NBC News
Senate advances resolution to end Iran war as GOP Sen. Bill Cassidy flips to support it (opens NBC News)
Published May 18, 2026
NBC News's feed description
The Senate voted to move forward with a resolution to force President Donald Trump to end the war in Iran, a breakthrough for the Democratic-led effort.
Fox26 Houston
Senate bill forcing vote on Iran war advances after Republican flips following primary loss (opens Fox26 Houston)
Published May 18, 2026
Fox26 Houston's feed description
A Republican senator's decision to support a bill that would require President Donald Trump to get congressional support to continue the Iran war proved crucial Tuesday as the Senate voted to advance the measure.
Washington Examiner
Senate advances Iran war powers bill as Cassidy flips after primary loss (opens Washington Examiner)
Published May 19, 2026
Washington Examiner's feed description
The bill had previously been shot down with a lack of Republican support, but Sen. Bill Cassidy's defection could be crucial.
CBS News
Senate advances resolution to limit Trump's Iran war powers for first time, after 4 Republicans defect (opens CBS News)
Published May 19, 2026
CBS News's feed description
Four Republicans voted with nearly all Democrats to advance the Iran war powers measure, with GOP Sen. Bill Cassidy joining the Republican defectors for the first time.
Honolulu Star-Advertiser
Senate votes to take up measure to force Trump to end Iran war | Honolulu Star-Advertiser (opens Honolulu Star-Advertiser)
Published May 19, 2026
Honolulu Star-Advertiser's feed description
WASHINGTON >> The Senate today agreed to take up a measure that would force President Donald Trump to end the war in Iran or win authorization from Congress to continue it, after a handful of Republicans joined Democrats in pushing forward with a resolution the GOP has managed to block for months.
The Week
Senate advances bill to halt Iran war after GOP flip (opens The Week)
Published May 19, 2026
The Week's feed description
Sen. Bill Cassidy (R-La.), who recently lost his primary reelection campaign, was among those who flipped
Al Jazeera
US Senate advances resolution to curb Trump’s power to wage war on Iran (opens Al Jazeera)
Published May 19, 2026
Al Jazeera's feed description
Vote to advance War Powers Resolution seen as rare rebuke of the president as pressure grows to end US attack on Iran.
Al-Monitor
Senate advances resolution to limit Trump's Iran war powers (opens Al-Monitor)
Published May 19, 2026
Al-Monitor's feed description
The measure marks a symbolic win for Democrats and a growing number of Republicans who have questioned the Trump administration's war with Iran.
New York Post
Senate advances Iran war powers resolution as beaten GOP Sen. Bill Cassidy changes vote to defy Trump (opens New York Post)
Published May 19, 2026
New York Post's feed description
The Senate advanced a measure Tuesday that would force President Trump to suspend military action against Iran without congressional approval, as four Republicans broke with the White House.
Truthout
After Months of Failed Votes, Senate Finally Advances Iran War Powers Resolution (opens Truthout)
Published May 19, 2026
Truthout's feed description
Sen. Bill Cassidy voted in favor of the resolution days after losing his primary race to a Trump-endorsed candidate.
Deutsche Welle
US Senate advances measure to limit Trump's Iran war powers (opens Deutsche Welle)
Published May 19, 2026
WMUR
Senate passes war powers bill on Iran conflict (opens WMUR)
Published May 19, 2026
WMUR's feed description
The Senate passed a resolution Tuesday to restrict President Donald Trump’s ability to continue military action in Iran, reflecting some bipartisan frustration with the ongoing conflict.
WMUR
Senate advances bill aimed at ending Iran War (opens WMUR)
Published May 19, 2026
WMUR's feed description
The Senate has advanced legislation that seeks to force President Donald Trump to withdraw from the Iran War.
Seattle Times
Senate advances bill aimed at ending Iran war as Cassidy, after primary loss, flips to support (opens Seattle Times)
Published May 19, 2026
Seattle Times's feed description
The Senate has advanced legislation that seeks to force President Donald Trump to withdraw from the Iran war.
New Hampshire Union Leader
Senate advances measure curbing Trump (opens New Hampshire Union Leader)
Published May 19, 2026
New Hampshire Union Leader's feed description
The Senate advanced a war-powers resolution on Tuesday that would end the Iran war unless President Donald Trump obtains Congress’ authorization, a rare rebuke of the Republican leader 80 days

Identical headlines usually mean shared wire copy. They are counted as separate articles but are not independent confirmation.