President Donald Trump’s latest tariffs face a legal challenge Wednesday at the U.S. Court of International Trade after the Supreme Court ruled that his earlier global duties exceeded authority under the International Emergency Economic Powers Act. The administration shifted to Section 301 of the Trade Act of 1974, imposing 10% to 12.5% surcharges on goods from 80 countries after determining they had failed to address forced labor in exported goods. The Liberty Justice Center and small-business challengers argue the law supports country-specific responses to unfair trade practices, not a broad global tariff program. Democratic-controlled states will also join the proceedings. The administration says the U.S. trade representative has discretion to respond to forced labor findings and that the timing avoided complications from overlapping duties. The Court of International Trade could take weeks or months to rule, with appeals potentially extending the dispute to the Supreme Court. The legal fight follows the invalidation of Trump’s earlier tariffs and $168 billion in refunds to importers, while additional Section 301 investigations and separate duties on Canadian goods remain in play.