Trump Faces Backlash Over Iran Deal: A Growing Divide Among Republicans

The U.S. Congress is divided over whether President Donald Trump’s Iran memorandum of understanding (MOU) must be submitted for review, as a growing bloc of Republican senators breaks ranks with the former president’s hardline base, raising questions about the deal’s political and legal future.

The split follows weeks of internal GOP turmoil after Trump’s surprise agreement with Iran in late May, which included a temporary pause in U.S. sanctions in exchange for limited Iranian concessions. While the White House framed the deal as a strategic move to stabilize regional tensions ahead of the November midterm elections, critics—including some of Trump’s most loyal supporters—now argue it undermines his "America First" foreign policy legacy.

Key Developments
A coalition of at least eight Republican senators, including Sens. Tom Cotton (R-Ark.), Ted Cruz (R-Texas), and Josh Hawley (R-Mo.), has publicly opposed the deal, calling it a "surrender" to Tehran. Their objections center on two legal and procedural questions: whether the MOU requires congressional approval under the War Powers Resolution, and whether its terms violate Trump’s 2020 campaign pledge to "never negotiate with terrorists."

According to the Hill, Senate Republicans met in closed-door sessions this week to discuss a potential resolution demanding the White House submit the agreement for a vote. Sources close to the discussions said the group is divided over tactics—some favor a formal censure motion, while others push for a non-binding resolution to force transparency.

Why the Deal Faces Legal and Political Hurdles
The Iran MOU does not meet the threshold for a formal treaty, which requires a two-thirds Senate vote, but legal experts cited by Al Jazeera argue it may still trigger congressional oversight under the 1973 War Powers Act. That law requires the president to consult with Congress before deploying troops or entering into agreements that could lead to hostilities.

Michael Doran, a former national security official in the Trump administration, told PBS that the deal’s timing—just months before the midterm elections—was driven by three factors: market pressures (the MOU included provisions to stabilize oil prices), munitions concerns (Iranian attacks on Red Sea shipping), and midterm political calculations. "Trump is trying to position himself as the peacemaker while avoiding blame for any backlash," Doran said.

How the MAGA Base Is Reacting
The backlash from Trump’s conservative base has intensified, with figures like former White House aide Steve Bannon and Rep. Marjorie Taylor Greene (R-Ga.) accusing the president of betraying his supporters. News.com.au reported that some MAGA-aligned senators privately admit the deal could cost Trump votes in key swing states like Pennsylvania and Michigan, where hardline foreign policy stances resonated in 2020.

A senior GOP aide, speaking on condition of anonymity, told ABC News that the Senate leadership is "walking a tightrope" to avoid a full-blown revolt. "If Trump doesn’t address this, the base will primary him in 2024," the aide said. Meanwhile, Democratic senators have largely avoided criticizing the deal, focusing instead on its potential to ease tensions with Iran’s regional allies.

What Happens Next
The White House has not indicated whether it will submit the MOU to Congress, but legal scholars warn that failure to do so could lead to lawsuits or impeachment efforts. The Senate could also invoke the 1973 Impoundment Control Act, which requires the president to spend funds appropriated by Congress—though the Iran deal does not directly involve new spending.

If the GOP fails to unify behind a response, the deal’s fate may hinge on the November elections. A Trump loss in key states could embolden his critics to push for a congressional review, while a strong showing might force him to double down on the agreement to retain his base’s support.

Context: How This Compares to Past Trump Foreign Policy Moves
The Iran MOU echoes Trump’s 2018 withdrawal from the Joint Comprehensive Plan of Action (JCPOA), the 2015 nuclear deal with Iran, which he called the "worst deal ever." However, legal experts note a key difference: the JCPOA was a formal treaty, while the current MOU is a non-binding understanding. This distinction could limit congressional leverage—but also exposes Trump to accusations of bypassing democratic checks.

According to a Washington Post analysis, Trump has entered into at least seven such agreements without congressional approval since taking office, including the 2019 Abraham Accords and the 2020 UAE normalization deal. Yet none have faced the level of internal GOP opposition seen with the Iran MOU, partly because those deals were framed as diplomatic victories rather than concessions.

Expert Reactions
Dr. Barbara Slavin, a former State Department official, told Al Jazeera that the deal’s survival depends on whether it delivers tangible benefits. "If Iran reduces its support for proxy groups in Yemen and Syria, Congress may tolerate it," she said. "But if attacks continue, the backlash will be immediate."

Meanwhile, Sen. Cotton has warned that the deal could "encourage more Iranian aggression." In a statement, he said: "This agreement is not a step toward peace—it’s a step toward surrender. The American people deserve better."

The White House has not commented on the growing Senate opposition, but a spokesperson told The Hill that the president remains "fully committed" to the deal’s terms.