美最高法院裁定特朗普全球关税违法，美国或需退还1750亿美元关税

Core Viewpoint - The U.S. Supreme Court ruled that the tariffs imposed by the Trump administration under the International Emergency Economic Powers Act lacked clear legal authorization, potentially requiring the refund of over $175 billion in tariffs collected since December 14 [1]. Group 1: Legal Context - The Supreme Court upheld a lower court's decision with a 6-3 vote, stating that Trump's use of the International Emergency Economic Powers Act to impose tariffs exceeded his statutory authority [1]. - The ruling does not completely strip Trump of the power to impose tariffs, as he has previously enacted tariffs on products like copper, steel, and aluminum under other trade laws [1]. Group 2: Financial Implications - Economists from the University of Pennsylvania's Wharton Budget Model estimated that tariffs collected under the International Emergency Economic Powers Act have exceeded $175 billion [1]. - Following the Supreme Court's ruling, there is a possibility that this amount may need to be refunded, impacting the financial landscape for businesses affected by these tariffs [1]. Group 3: Political and Administrative Actions - The Trump administration implemented a series of tariff measures through executive orders without congressional approval, leading to various legal challenges domestically [1]. - After lower courts ruled against the Trump administration's tariff policies, an appeal was made to the Supreme Court, highlighting ongoing legal disputes regarding trade policy [1].