The decision does not affect all of Trump’s tariffs but invalidates those implemented using an emergency law.

Delivering a major blow to President Donald Trump, the Supreme Court on Friday ruled that he exceeded his authority when imposing sweeping tariffs using a law reserved for a national emergency.

The justices, divided 6-3 held that Trump’s aggressive approach to tariffs on products entering the United States from across the world was not permitted under a 1977 law called the International Emergency Economic Powers Act (IEEPA).