President Donald Trump announced Saturday that his administration is increasing the global tariff rate to 15%, escalating trade enforcement just one day after a Supreme Court ruling curtailed his authority under emergency economic law.
The move follows a 6–3 decision by the United States Supreme Court, which rejected the president’s ability to impose broad tariffs using the International Emergency Economic Powers Act (IEEPA). The ruling represents a significant limitation on executive authority over trade actions framed as national emergencies.
Responding to the decision, Trump said the administration would immediately raise the global tariff ceiling using alternative legal authority. In a lengthy Truth Social post, the president sharply criticized the court and justified the increase as both lawful and necessary.
“Based on a thorough, detailed, and complete review of the ridiculous, poorly written, and extraordinarily anti-American decision on Tariffs issued yesterday, after MANY months of contemplation, by the United States Supreme Court, please let this statement serve to represent that I, as President of the United States of America, will be, effective immediately, raising the 10% Worldwide Tariff on Countries, many of which have been ‘ripping’ the U.S. off for decades, without retribution (until I came along!), to the fully allowed, and legally tested, 15% level,” Trump wrote.
He added that additional trade actions are forthcoming as the administration reassesses its legal options.
“During the next short number of months, the Trump Administration will determine and issue the new and legally permissible Tariffs, which will continue our extraordinarily successful process of Making America Great Again – GREATER THAN EVER BEFORE!!!”
The tariff increase builds on an earlier announcement made Friday evening, when Trump unveiled a 10% global tariff shortly after the court’s ruling, citing a different statutory basis.
“It is my Great Honor to have just signed, from the Oval Office, a Global 10% Tariff on all Countries, which will be effective almost immediately,” Trump wrote at the time.
According to the White House, that order was issued under Section 122 of the Trade Act of 1974 and applies on top of existing tariff structures. Trump confirmed during a Friday press briefing that the administration views this provision as a lawful pathway to maintain aggressive trade measures despite the court’s decision.
While the Supreme Court blocked tariffs issued under IEEPA, the president made clear that the ruling would not halt his broader trade agenda. He said the administration is actively pursuing “alternatives” to emergency-based tariff authority.
Trump also reacted emotionally to the decision, calling it “deeply disappointing” and stating that he was “ashamed” of certain members of the court.
