The Supreme Court ruled Friday that President Trump does not have the authority to rely on emergency powers to enact wide-ranging tariffs on goods imported into the United States.

By a 6-3 margin, the justices determined that the International Emergency Economic Powers Act (IEEPA) — the statute cited by Trump to implement sweeping tariffs, including a 10% baseline levy and an additional 10% tariff on Chinese imports tied to its role in the flow of fentanyl into the US — does not grant the president the power to impose such duties.

Chief Justice John Roberts authored the court’s majority opinion. He was joined by conservative justices Amy Coney Barrett and Neil Gorsuch, along with liberal justices Ketanji Brown Jackson, Elena Kagan and Sonia Sotomayor.