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US Supreme Court strikes down Trump’s tariffs: Early analysis from Chatham House experts

Chatham House | 2026-02-23 | economy

Topics: Europe, Indo-Pacific, Trade, United States

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English Summary

The US Supreme Court invalidated President Trump's use of the International Emergency Economic Powers Act to impose broad tariffs, ruling that the administration exceeded its executive authority. Despite this legal setback, the White House immediately pivoted to Section 122 of the 1974 Trade Act to implement a new 15% global tariff, though experts warn this move remains vulnerable to further litigation. Ultimately, the ruling fails to restore predictability to US trade policy, forcing global partners to navigate continued protectionist volatility and pursue long-term trade diversification strategies.

中文摘要

美國最高法院裁定川普總統利用《國際緊急經濟權力法》徵收廣泛關稅的行為無效,判定行政部門逾越了其行政權限。儘管遭遇法律挫折,白宮立即轉而根據 1974 年《貿易法》第 122 條實施新的 15% 全球關稅,但專家警告此舉仍可能面臨進一步的訴訟。最終,該裁決未能恢復美國貿易政策的可預測性,迫使全球夥伴在持續的保護主義波動中尋求應對之道,並追求長期的貿易多元化策略。

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