特朗普宣布签署行政令 加征10％全球关税

Core Points - The U.S. Supreme Court ruled that the Trump administration's large-scale tariffs imposed under the International Emergency Economic Powers Act lacked clear legal authorization, limiting the president's ability to impose tariffs through this act [1][2] - Despite the ruling, the Supreme Court did not completely strip the president of the power to levy tariffs, indicating that other legal avenues may still be available for tariff imposition [2] - The Trump administration plans to initiate investigations into "unfair trade practices" under Section 301 of the Trade Act of 1974 to protect U.S. interests [1] Group 1 - The Trump administration signed a bill imposing a 10% global import tariff on all countries, which was set to take immediate effect [1] - The Supreme Court's decision may lead to prolonged legal battles regarding the potential refund of billions in tariffs to U.S. companies, with Trump suggesting it could take up to five years to resolve [1][2] - The ruling follows multiple lawsuits from U.S. businesses and state governments challenging the legality of the tariffs imposed without congressional approval [2] Group 2 - The Supreme Court's ruling does not provide clarity on whether previously collected tariffs will be refunded or how such refunds would be handled [2] - The Trump administration's use of the International Emergency Economic Powers Act to impose tariffs has faced legal challenges since its implementation in 2025 [2] - The U.S. International Trade Court previously ruled against the Trump administration's actions, leading to an appeal that was upheld by the Federal Circuit Court [2]