特朗普诉至最高法院要求维持全球关税，万亿美元贸易战将迎终局裁决

Core Viewpoint - The article discusses President Trump's request for the U.S. Supreme Court to uphold his global tariff policy, which could significantly impact international trade and grant him new leverage over the global economy [1][3]. Economic Implications - This case is one of the largest the Supreme Court has ever handled in terms of economic stakes, with a potential outcome that could halve the current average effective tariff rate of 16.3% and require the U.S. to refund billions in tariffs [3]. - The tariffs in question include those implemented on April 2, which represent the largest increase in U.S. import taxes since 1930, raising the average applicable tariff rate to its highest level in over a century [6]. Legal Context - The Supreme Court is being asked to expedite the review process, with oral arguments scheduled for early November, potentially leading to a ruling by the end of the year [5]. - The legal challenge stems from a ruling by a federal appeals court that determined Trump could not impose large-scale import taxes under the 1977 law intended for national emergencies [3][8]. Presidential Authority - The case will test the limits of presidential power regarding national security and economic emergencies, as the law does not explicitly grant the authority to impose tariffs [8][9]. - The Constitution assigns tariff authority to Congress, raising questions about whether this power has been delegated to the President [9]. Implications for Trade Agreements - A ruling against Trump could disrupt preliminary trade agreements he has made with various countries and affect ongoing diplomatic negotiations [4][6].