Donald Trump's freshly announced interim agreement with Iran is drawing fire from within his own party, with Senate Republicans dividing sharply over whether the administration has surrendered too much ground to Tehran.
The deal, released Wednesday after a 110-day conflict, aims to reopen the Strait of Hormuz and avert economic catastrophe. But it comes with substantial political and financial concessions to Iran, setting off alarms among Republican lawmakers who worry the administration has capitulated to a hostile power.
Senator Bill Cassidy of Louisiana launched the most blistering attack, calling the agreement "the worst foreign policy blunder in decades." The departing senator invoked Ronald Reagan, writing that "Reagan is rolling over in his grave," and laid out a damning accounting of what he sees as surrender: 13 American service members dead since the conflict began, families bleeding money at the pump, and sanctions set to lift in exchange for little concrete restraint on Iran's nuclear program.
"Iran's nuclear ambitions were not curbed, and they have learned that threatening the strait of Hormuz works and will undoubtedly leverage it in the future," Cassidy wrote on social media. "Now, Iran gets to build brand-new infrastructure under this deal."
The Trump administration counters that the accord contains real safeguards. Officials point to Iran's commitment to destroy its enriched uranium stockpile through downblending, arguing the pact prevents Tehran from acquiring nuclear weapons. Critics, however, note that the agreement appears to extract fewer concessions than Barack Obama's 2015 nuclear deal.
Cassidy's opposition carries personal weight. Trump orchestrated a primary campaign against the Louisiana senator last month, publicly denigrating him as "a disloyal disaster" after Cassidy voted to convict Trump following the January 6 insurrection. Cassidy lost that primary, with voters choosing to advance two challengers to a runoff.
Other Republicans have expressed hesitation without fully turning against the deal. Senator Lindsey Graham, typically one of Trump's staunchest allies, initially voiced concern that "Iran's view of the agreement seems different than what the American negotiating team is claiming." But after a lengthy conversation with special envoy Steve Witkoff on Wednesday, Graham shifted tone, saying he now believes signing the memorandum of understanding will benefit the United States by opening the strait and halting hostilities.
Graham hedged his support, noting that whether the two sides can reach a verifiable final agreement on Iran's nuclear program remains to be seen. "I see little downside to trying," he wrote.
Vice President JD Vance thanked Graham for his statement, underscoring the administration's desire to lock in Republican support as the deal moves forward.
Senator Thom Tillis raised another red flag. The North Carolina Republican expressed alarm at reports that the administration is considering a $300 billion fund for Iran as part of the package. "I'm hearing a $300bn number and that's concerning to me," Tillis told reporters Wednesday. "I also need to know the methodology. I'm not interested in just an agreement that gets us through two and a half years."
The interim accord is scheduled for formal unveiling later this week in Switzerland. It gives both Washington and Tehran 60 days to negotiate a comprehensive final agreement on broader issues including Iran's nuclear ambitions.
The conflict has claimed thousands of lives and battered the global economy. The fallout has already splintered Republican unity on foreign policy. This month, the House voted 215 to 208 on a war powers resolution, with four Republicans joining Democrats to curb Trump's authority over military action against Iran.
Trump defended the ceasefire at Wednesday's G7 summit, vowing that any Iranian misbehavior would trigger a swift response. "If Iran misbehaves, I'm going to go back to dropping bombs right smack in the middle of their head," he said.
Author James Rodriguez: "Cassidy's broadside cuts deeper than typical intraparty sniping because he has nothing left to lose, and that matters when a party's foreign policy consensus is cracking."
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