What Republicans Said About Obama's Iran Nuclear Deal Compared to Trump's
Republicans spent years portraying former President Barack Obama's 2015 Iran nuclear deal as a dangerous trade of sanctions relief for limits they argued were too weak, too temporary, and too easy for Tehran to reverse. Now, as President Donald Trump works toward a new agreement with Iran, many of the same arguments are resurfacing-this time aimed at a Republican president's own framework.
Some of the most consequential details of Trump's memorandum of understanding (MOU) are still being negotiated and are expected to be worked out over the next 60 days, meaning the final structure-and how directly it compares to Obama's Joint Comprehensive Plan of Action (JCPOA)-is not yet fully clear.
On Monday, Trump said the final deal to end the Iran war that began in late February will include strong inspection measures, writing on Truth Social: "Everybody is fully aware that Iran will agree to have Major Weapons Inspections in order to ensure ‘Nuclear Honesty' long into the future."
The Trump administration has emphasized that negotiations are ongoing.
A senior U.S. diplomat told Newsweek on Monday officials are engaged in "robust discussions" across all elements of a broader agreement, including nuclear issues, the Strait of Hormuz, and deconfliction mechanisms in southern Lebanon between Israel and Iran-backed militia Hezbollah. Officials described the current framework as a starting point for further technical talks rather than a final settlement.
Even with that caveat, the early politics are clear: On sanctions relief, inspections, uranium enrichment and congressional approval, Republicans are raising concerns that closely mirror their criticism of Obama's deal.
White House spokeswoman Olivia Wales pushed back on such criticism, telling Newsweek on Friday: "President Trump and his negotiating team have brokered an excellent, performance-based MOU that advances the interests of the United States by ending the fighting, reopening the Strait of Hormuz to significantly lower energy prices, and forcing Iran to commit to abandon its nuclear ambitions.”
Familiar Objections
When Obama, a Democrat, unveiled the JCPOA in 2015, he described it as a comprehensive deal that blocked Iran's pathways to a nuclear weapon and imposed strict verification.
Republicans rejected that premise almost immediately. Their arguments centered on several themes:
- Iran received too much sanctions relief too early
- Nuclear limits were temporary, not permanent
- The deal failed to fully dismantle Iran's nuclear program
- The agreement lacked binding congressional approval
Those same concerns are now shaping reactions to Trump's interim framework.
Republicans also argued in 2015 that the JCPOA focused too narrowly on nuclear issues while leaving Iran's missile program and regional activity largely untouched-a criticism that is also resurfacing in the current debate.
Cotton Then, Now
Senator Tom Cotton of Arkansas became one of the most visible critics of the JCPOA, warning in 2015 that any agreement not approved by Congress could be reversed by a future administration and describing the deal as a major strategic mistake.
Trump withdrew from the deal after he was elected in 2016.
Now, Cotton's tone on Trump's framework is more measured, but his concerns sound familiar.
Last week on Fox News, he warned that "certain aspects of this deal are a step in the wrong direction" and stressed the importance of maintaining U.S. leverage over Iran.
Cruz and Graham
Senator Ted Cruz of Texas was one of the most forceful critics of the Obama deal in 2015, calling it a "catastrophic mistake" that "endangers millions" and warning it would strengthen Iran and accelerate its path to a nuclear weapon.
His reaction to Trump's framework uses different language but a similar core argument, again focusing on the risks of granting Iran financial benefits without stronger guarantees.
"History teaches that giving billions of dollars to theocratic lunatics who want to murder us is not a good idea," he told The Hill last week. “I think the president is receiving some very poor advice on this deal.”
Senator Lindsey Graham of South Carolina was one of the most vocal critics of the JCPOA, arguing in 2015 that the "terrible" deal would empower Iran while failing to eliminate its nuclear capabilities. After the Trump administration released its framework last week, he struck a more measured tone-calling the agreement worth trying but warning a final nuclear deal remained uncertain and could fail.
“Let’s try a diplomatic solution. I think it’s going to fail. What happens next?” Graham, a staunch Trump supporter, said Sunday during an interview appearance on CBS News’ Face the Nation.
More GOP Voices
Other Republican lawmakers are echoing similar themes.
Senator Roger Wicker of Mississippi warned on Thursday that Trump's framework "negotiates away the victories of Operation Epic Fury in ways that are completely out of step with the president's goals."
Senator James Lankford of Oklahoma has emphasized that a durable agreement should go through Congress.
"It is best if it is ratified by Congress; it has a more lasting effect on it," Lankford told NBC News' Meet the Press last week.
He added that the JCPOA "opened a pathway towards a nuclear weapon and just delayed it outside of the Obama presidency. That doesn't help the American people long term."
Meanwhile, across the GOP, the checklist looks familiar:
- No premature sanctions relief
- Strong, verifiable inspections
- Limits on enrichment
- A durable agreement with congressional backing
Trump vs. Obama
Trump has repeatedly slammed the JCPOA, telling NBC News earlier this month that the "deal was tantamount to giving them [Iran] a nuclear weapon,” adding that "it was a horrible deal given by Barack Obama, and really penned by him."
The president added on Truth Social in April, writing, "If I did not terminate that ‘Deal,' Nuclear Weapons would have been used on Israel, and all over the Middle East, including our cherished U.S. Military Bases."
Obama, meanwhile, has offered a different view. He has suggested any new agreement may not differ significantly from the original deal and has argued the United States could end up spending more to reach similar ground after leaving the JCPOA.
“It is doubtful that any agreement that arises is going to be significantly different or a significant improvement from the deal that we had in the first place and had worked for, for a long stretch of time before we, the United States, pulled out of it,” he told ABC News earlier this month.
Contact Newsweek editor on this story: Anthony Murray.
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This story was originally published June 22, 2026 at 3:47 PM.