白宫乐观、企业绝望：最高法院质疑特朗普关税权，全球贸易再陷不确定性迷雾

Core Points - The U.S. Supreme Court is questioning President Trump's use of broad powers to impose tariffs, indicating potential judicial intervention, which will create uncertainty for affected businesses and countries for months to come [2][3] - Regardless of the court's ruling on the constitutionality of tariffs imposed under the International Emergency Economic Powers Act (IEEPA), Trump may still utilize other legal avenues to impose tariffs, although these may not provide the immediate effect he prefers [2][3] Geopolitical Impact - The uncertainty surrounding the tariffs is affecting geopolitical negotiations with major trading partners like the EU, and businesses are preparing for the implications of ongoing tariffs [3][4] - A negative ruling against Trump's tariffs could weaken his international economic agenda and impact negotiations with countries like the EU, Brazil, and India, as well as trade talks with South Korea and Vietnam [4] Economic Consequences - Bloomberg Economics estimates that if the Supreme Court issues a broadly unfavorable ruling, the average effective tariff rate in the U.S. could drop to 6.5%, significantly reducing the economic impact of the trade war, with a projected GDP loss of 0.6% compared to a 1.7% loss if current tariffs remain [5] - The importance of tariff revenue for balancing the federal budget is highlighted, with recent fiscal year deficits decreasing to $1.78 trillion, down 2% from the projected $1.82 trillion for 2024, although this only slightly improves the government's debt trajectory [5][6] Business Realities - Businesses are facing significant unpredictability due to Trump's tariffs, particularly those implemented under IEEPA, which have created instability in the import sector [6][7] - Small businesses are particularly vulnerable, with some owners expressing cautious optimism about potential court rulings but fearing that any relief may come too late to mitigate the damage caused by tariffs [7]