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Senate Passes Historic War Powers Resolution on Iran; Trump Clashes with GOP Senator Cassidy
The Senate passed an unprecedented war powers resolution on June 23 by a 50–48 vote, requiring Trump to end military operations against Iran or seek congressional approval. Trump condemned the measure as senseless, and tensions escalated on June 24 when he clashed with Republican Senator Bill Cassidy during a private GOP lunch, with both men raising their voices and Cassidy defending his pro-resolution vote over the war's lack of progress.
Quick Facts
Who
President Donald Trump
What
Senate passed war powers resolution limiting Trump's military authority over Iran
When
June 23, 2026 – Senate passed resolution
Where
U.S. Senate
- Senate passed war powers resolution limiting Trump's military authority over Iran
- House previously passed the same resolution (215–208)
- Trump criticized the resolution as untimely and senseless
- Four Republicans voted with Democrats to pass the resolution
- Trump and Senator Cassidy had a heated argument during a private Republican lunch
The U.S. Senate passed an unprecedented war powers resolution on June 23, requiring President Trump to suspend military operations against Iran or obtain congressional approval before resuming hostilities. The measure passed 50–48, with four Republicans—Rand Paul, Lisa Murkowski, Susan Collins, and Bill Cassidy—joining all Democrats in support. This marks the first time since the War Powers Act of 1973 that both chambers of Congress have successfully passed such a joint resolution limiting presidential military authority. Though largely symbolic and not requiring presidential signature, the resolution reflects growing congressional and public dissatisfaction with the prolonged conflict.
Trump strongly criticized the resolution as "untimely and senseless," claiming Iran was on the verge of capitulation and that Congress had undermined his negotiating position. On June 24, tensions erupted during a private Republican Senate lunch when Trump confronted Senator Bill Cassidy, one of the four Republicans who voted for the measure. Cassidy, who lost his primary race after Trump backed a rival candidate, defended his vote by stating the war had lasted four months instead of the promised four weeks and original objectives remained unmet. The exchange became heated, with Trump reportedly raising his voice, calling Cassidy a "lunatic," and repeatedly telling him to sit down. Cassidy acknowledged matching Trump's tone but eventually sat down to de-escalate, maintaining that the American people deserved more transparency about the conflict's progress.
The resolution's passage occurs amid significant public opposition to the Iran war. Recent polling shows 52 percent of Americans view the military action as "not worth it," while Trump's approval rating has dropped to 34 percent—his lowest point in his second term. The Pentagon simultaneously requested approximately $80 billion in congressional funding, with the majority allocated to covering war expenses. Democratic leaders characterized the resolution as a rebuke of what they call Trump's "historic mistake," while some Republicans warned it could weaken the administration's negotiating position as talks continue with Iran over a long-term peace agreement.
The confrontation between Trump and Cassidy reflects broader divisions within the Republican Party. Cassidy, freed from primary electoral concerns after his defeat, has become more willing to publicly oppose Trump's policies on multiple fronts, including Ukraine aid and alleged political persecution funds. Republican colleagues largely remained silent during the lunch confrontation, with Cassidy noting that Trump "talked and talked and talked." Trump left the meeting visibly angry, telling reporters he dislikes certain individuals without naming specifics. The episode underscores Republican anxiety about narrow congressional majorities heading into November midterm elections amid unpopular military operations.
Why This Matters
This resolution represents the first successful congressional check on Trump's military authority since the War Powers Act of 1973, signaling significant legislative pushback against an unpopular war that has eroded presidential approval ratings to 34%. For readers, this demonstrates the fragility of Trump's Republican congressional coalition and indicates that even party loyalists may abandon him on major policy issues—a critical indicator as midterm elections approach. The Pentagon's simultaneous $80 billion funding request underscores the fiscal and strategic stakes of continued conflict with Iran.
Timeline & Sources
Apr 7, 2026
WireCeasefire agreement reached between U.S. and Iran
May 16, 2026
WireCassidy loses primary election to Trump-backed candidate; begins taking tougher stance against Trump
May 16, 2026
WireCassidy finishes third in Louisiana Republican primary; opponent backed by Trump wins
Jun 3, 2026
WireU.S. House passes war powers resolution 215–208
Jun 3, 2026
WireHouse passes war powers resolution 215–208, with 4 Republicans voting yes
Jun 23, 2026
WireU.S. Senate passes war powers resolution 50–48; Trump condemns measure as 'untimely' and 'helping the enemy'
Jun 23, 2026
WireIran and Oman issue joint statement on Hormuz Strait safe passage; Reuters/Ipsos poll shows 52% of Americans oppose Iran war
Jun 23, 2026
WireSenate passes war powers resolution 50–48; Trump condemns it as senseless
Jun 24, 2026
WireTrump and Senator Cassidy have heated confrontation at closed-door Republican Senate lunch at Capitol
Jun 24, 2026
WireTrump and Senator Cassidy clash during private GOP Senate lunch; heated argument ensues
Jun 24, 2026
WirePentagon requests $80 billion in congressional funding for war expenses
Jun 30, 2026
WireScheduled resumption of U.S.–Iran technical negotiations (per Pakistan announcement)