The Republican president has been vocal about the tariffs case, previously calling it one of the most important in U.S. history.
WASHINGTON — President Donald Trump will hold a press briefing on Friday, where he will speak publicly for the first time after the Supreme Court struck down his sweeping tariffs.
The press conference is scheduled for 12:45 p.m. Eastern, according to the White House.
Six of the court’s nine justices ruled that the president does not have the authority to impose tariffs under the International Emergency Economic Powers Act, which the Trump administration argued gave them the ability to do so.
The majority found that the Constitution “very clearly” gives Congress the power to impose taxes, which include tariffs. “The Framers did not vest any part of the taxing power in the Executive Branch,” Chief Justice John Roberts wrote.
The Republican president has been vocal about the case, calling it one of the most important in U.S. history and saying a ruling against him would be an economic body blow to the country. But legal opposition crossed the political spectrum, including libertarian and pro-business groups that are typically aligned with the GOP.
Polling has found tariffs aren’t broadly popular with the public, amid wider voter concern about affordability.

Numerous small businesses and states that challenged the tariffs argued that Trump illegally used emergency powers to set import taxes on goods from nearly every country in the world, putting their businesses at risk of bankruptcy.
Friday’s decision does not stop the president from imposing duties under other laws. While those have more limitations on the speed and severity of Trump’s actions, top administration officials have said they expect to keep the tariff framework in place under other authorities.
Justices on the nation’s highest court made the decision months after they agreed to take up an unusually quick hearing on the case at the request of the Trump administration.
The Associated Press contributed to this article.