The U.S. Supreme Court has ruled that the International Emergency Economic Powers Act (IEEPA) cannot be used to impose tariffs, potentially sparking extensive legal battles over tariff refunds. According to Ming Pao, more than 1,500 import and export companies have already filed lawsuits seeking to recover up to $170 billion in tariffs paid. These companies include major retailers like Costco and aluminum producer Alcoa, as well as hundreds of small and medium-sized enterprises. However, the Supreme Court's decision did not explicitly state whether importers are entitled to refunds, leaving the matter to be addressed by the U.S. Court of International Trade (CIT).