CUSTOMS LITIGATION | 2026-03-02

IEEPA Tariff Refund Litigation: Customs Attorney Los Angeles Guide to Court of International Trade Claims

Following the Supreme Court's 6-3 ruling in Learning Resources, Inc. v. Trump that IEEPA does not authorize presidential tariffs, over 1,000 lawsuits have flooded the U.S. Court of International Trade as importers seek refunds of up to $179 billion in unlawfully collected duties.

On February 20, 2026, the Supreme Court of the United States issued its landmark 6-3 decision in Learning Resources, Inc. v. Trump, holding that the International Emergency Economic Powers Act does not grant the President authority to impose tariffs on imported goods. The ruling invalidated approximately $160 to $179 billion in IEEPA tariffs collected from American importers over the preceding year, triggering what is now the largest customs duty refund dispute in American history. Within days o

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