Trump Advisors Divided on How to Tariff Iran’s Allies

Why It Matters

Re‑activating IEEPA for tariffs could reshape U.S. trade enforcement and trigger fresh legal battles, while the massive refund backlog strains government resources and importers alike.

Key Takeaways

• Trump eyes 50% tariffs on nations supplying Iran's weapons
• Advisors split: tariffs vs prohibitive trade bans under IEEPA
• Supreme Court previously struck down similar IEEPA duties
• Treasury faces $166 billion refund obligations to importers
• New CAPE system slated for April 20 to process refunds

Pulse Analysis

The International Emergency Economic Powers Act, a Cold‑War‑era statute, grants the president sweeping authority to regulate commerce during a national emergency. Historically, presidents have used IEEPA to block assets or restrict transactions, but its application to impose tariff-like duties is novel and legally contentious. In 2025, the Supreme Court ruled 6‑3 that the executive branch overstepped its constitutional taxing power when it used IEEPA to levy duties on dozens of trading partners, setting a precedent that any similar future action will likely face intense judicial scrutiny.

Within the White House, the debate over how to leverage IEEPA reflects a broader strategic rift. Kevin Hassett argues that a 50% tariff on Iran’s allies sends a clear punitive signal and exploits the president’s emergency powers. In contrast, Trade Representative Jamieson Greer favors using IEEPA to outright prohibit certain imports, a softer yet potentially more defensible approach. This internal discord underscores the administration’s urgency to counter Iran’s influence while navigating a legal landscape that has already curtailed its previous tariff experiment.

Beyond the political theater, the financial fallout is substantial. The Treasury Department still owes importers about $166 billion in refunds from the invalidated duties, a liability that strains federal budgets and erodes confidence among U.S. businesses. To expedite repayments, Customs and Border Protection will launch the Consolidated Administration and Processing of Entries (CAPE) system on April 20, aiming to streamline the massive volume of claims. How effectively the administration manages this refund process could influence future willingness of firms to engage in U.S. trade amid heightened policy volatility.