U.S. Supreme Court Strikes Down Trump’s Global Tariffs

The United States Supreme Court has ruled that the broad tariffs imposed by President Donald Trump were unlawful, delivering a major legal defeat to one of the key elements of his economic program. In a 6-3 decision, the high court found that Trump exceeded his constitutional authority by using emergency powers to impose sweeping tariffs on imports from many countries.

The court’s majority said only Congress has the power to levy taxes such as tariffs, and that the law Trump relied on did not clearly grant the president the ability to set wide-ranging import duties. Trump had justified the tariffs by declaring trade deficits a national emergency and applying a 1977 emergency economic law to justify the measures.

Several business groups and a coalition of states challenged the tariffs in court, arguing the president’s use of emergency authority for widespread import taxes was unconstitutional. Legal opposition also came from some pro-business and libertarian organizations, who contended the emergency law did not mention tariff powers.

The tariffs had been a central feature of Trump’s trade policy since 2025, affecting commerce with countries around the world. They were estimated to influence the U.S. economy by trillions of dollars over the next decade and generated billions in revenue before the court’s decision.

Although the ruling invalidates the use of emergency powers to impose these tariffs, it does not prevent future trade duties from being enacted under other laws that expressly permit such actions. Businesses that paid the now-void tariffs may pursue refunds through the courts. The decision also represents a significant check on presidential trade authority and could shape how future administrations approach tariffs and trade policy.