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The Supreme Court of the United States ruled Friday that President Donald Trump exceeded his authority by imposing a wide range of tariffs that disrupted global trade, blocking one of the key tools he used to advance his economic agenda.
In a 6–3 decision, the conservative-majority court found that the International Emergency Economic Powers Act (IEEPA) does not grant the president the authority to impose tariffs.
Trump had long used tariffs as a negotiating and pressure tool. However, after returning to the White House last year, he invoked emergency economic powers in an unprecedented manner to impose new tariffs on most U.S. trading partners, according to CNN.
The measures included reciprocal tariffs over what Washington described as unfair trade practices, as well as separate duties targeting major partners such as Mexico, Canada, and China, citing concerns related to drug flows and migration.
The Court stated that if Congress had intended to grant explicit authority to impose tariffs under IEEPA, it would have done so clearly, as it has in other trade laws.
The ruling does not affect sector-specific tariffs previously imposed by Trump on imports such as steel and aluminum. Official investigations remain underway that could result in additional tariffs on specific sectors.
The Supreme Court’s decision upholds earlier lower court findings that tariffs imposed under IEEPA were unlawful. In May, a lower trade court ruled that Trump had exceeded his authority by imposing sweeping tariffs and ordered most of them suspended, though enforcement of that ruling was temporarily paused pending the government’s appeal.