Earlier challengesMr Trump’s initial round of tariffs, imposed under the International Emergency Economic Powers Act, was struck down by the US Supreme Court in February. The complaint also includes a timeline of statements from Mr Trump administration officials, which the states say shows the investigations were rushed and effectively decided in advance. “The Plaintiff States oppose forced labour in all its forms and support protections for workers around the globe. But the administration cannot use forced labour as a pretext to continue its illegal tariff scheme.” Separate, sector-specific tariffs Mr Trump imposed under other legal authorities — including duties on steel, automobiles and other goods — have not been affected by the recent legal challenges.