Lawmakers urge aggressive US crackdown on Iran’s military, financial allies

House Foreign Affairs Committee hearing titled “A Return to Maximum Pressure: Comprehensively Countering the Iranian Regime’s Malign Activities,” on April 1, 2025.
House Foreign Affairs Committee hearing titled “A Return to Maximum Pressure: Comprehensively Countering the Iranian Regime’s Malign Activities,” on April 1, 2025.

US lawmakers and expert witnesses called for a more aggressive US strategy to confront Iran's nuclear ambitions, proxy networks, and financial enablers at a House Foreign Affairs Committee hearing on Tuesday.

Rep. Michael Lawler, who chairs the Middle East and North Africa Subcommittee, opened the hearing titled “A Return to Maximum Pressure: Comprehensively Countering the Iranian Regime’s Malign Activities,” by contrasting the Trump administration’s “maximum pressure” approach with what he called a dangerously lenient stance under President Biden.

“Joe Biden’s foreign policy decisions in the Middle East were ill conceived, disorganized, and at times fatal, including for US service members,” Lawler said.

He charged that Biden “left the world more volatile and less safe than he found it,” accusing his administration of “appeasing terrorists and enabling an “unholy alliance” between Iran, Russia, and China, with policies resulting in higher revenue flows from oil sales and an accelerated nuclear program.

He called for a crackdown on Iran’s oil exports—especially to China—arguing that “a nuclear Iran is not an option.” Lawler warned that “one way or another, Iran’s nuclear ambitions are finished,” and praised the Trump administration for “restoring the much-needed and most effective maximum pressure campaign.”

Norman Roule, a former US intelligence official and current advisor at CSIS, laid out the scope of the threat. 

“Iran now appears capable of producing its first quantity of 90% enriched uranium, sufficient for one nuclear weapon in about a week. Tehran's current stockpile of 60% enriched uranium is sufficient for about seven nuclear weapons,” he said.

Roule warned that Iran’s military allies such as Hezbollah in Lebanon remain dangerous despite recent setbacks. “The Islamic Revolutionary Guard Corps Quds Force aims to revive these groups,” he said, pointing to Iran’s attempts to reestablish influence in the Red Sea via Sudan as Iran's Houthi militia in Yemen continues its maritime blockade and attacks on US vessels.

“Iran looks like a country building a nuclear weapons program,” he said, although it “has yet to make the final steps required because it either fears discovery and the subsequent military consequences or believes its current approach offers diplomatic advantages.”

Claire Jungman of United Against Nuclear Iran focused on Iran’s financial backbone.
“Despite US sanctions, Iran continues to export over 1.5 million barrels of oil per day, earning tens of billions of dollars annually,” she said.

“These revenues are not just supporting Iran's economy, they are directly funding terrorism, nuclear escalation and regional destabilization.”

She emphasized the central role of the IRGC, adding, “Up to half of Iran's oil exports are now controlled by the Islamic Revolutionary Guard Corps.

“Every barrel of Iranian oil sold on the black market strengthens the IRGC’s hand bankrolling groups like Hamas, Hezbollah and the Houthis.”

Jungman called for a sweeping enforcement campaign. “Sanction every vessel, registry, insurer, captain and port that helps move Iranian oil,” she urged.

“Cutting off the money is our best tool to constrain Iran's most dangerous activities.”

Dana Stroul, Director of research at the Washington Institute, argued the time is ripe for decisive action. “The Iranian regime is on its back foot,” she said. “The pillars of its security strategy… are more vulnerable today than at any time in the history of the regime.”

She urged combining diplomacy with a credible military threat. “The administration must keep its military options open by maintaining a robust US military posture in the region,” she said.

“Real opportunities exist to block Iran from pursuing a nuclear weapons capability… but the United States must lean into diplomacy as well.”

Witnesses and lawmakers alike agreed that Iran is under pressure, but without sustained enforcement, the opportunity to constrain its ambitions may be lost.

US President Donald Trump on Sunday warned of bombing Iran if Tehran fails to reach a deal over its nuclear program.

"If they don't make a deal, there will be bombing — and it will be bombing the likes of which they have never seen before," Trump was quoted as saying during a phone interview with NBC News' Kristen Welker.

Trump on Friday also warned that “bad, bad things” would happen if Tehran did not agree to a nuclear deal.

Last month, Trump signed a directive restoring the so-called maximum pressure policy on Iran of his first term and warned of "catastrophic" consequences if Tehran does not make a deal on its nuclear program.

Trump's maximum pressure approach in his first term beginning in 2018 pummeled Iran's economy, causing a dramatic decline in oil exports and skyrocketing inflation.