The Supreme Court of the United States on Friday struck down President Donald Trump’s sweeping global tariff regime, ruling 6-3 that he exceeded his authority by imposing broad import duties under a national emergency law.

The decision invalidates tariffs Trump levied in early 2025 under the International Emergency Economic Powers Act, a statute enacted in 1977 and historically used to sanction foreign adversaries during crises. Trump cited persistent trade deficits and national security concerns, including fentanyl trafficking, to justify duties ranging from 10% to 50% on imports from nearly every major trading partner.

Writing for the majority, Chief Justice John Roberts…

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