US President Donald Trump on Saturday announced an immediate increase in worldwide tariffs on goods entering the United States from 10% to 15%, intensifying global trade tensions just a day after the US Supreme Court largely struck down his sweeping tariff program.
In a post on his Truth Social platform, Trump said the decision followed a “thorough review” of what he termed an “extraordinarily anti-American decision” by the court. He declared that the administration was raising import levies “to the fully allowed, and legally tested, 15% level,” effective immediately.
The move comes after the Supreme Court ruled 6–3 that Trump lacked the authority to unilaterally impose broad tariffs, a judgment that briefly boosted US stock markets before concerns resurfaced over renewed uncertainty in global trade. Despite the ruling, Trump vowed to continue pursuing his protectionist agenda, stating that the law permits him to impose tariffs of up to 15% for a period of 150 days, though the measure could still face legal challenges.
“I, as President of the United States of America, will be, effective immediately, raising the 10% worldwide tariff to the fully allowed, and legally tested, 15% level,” Trump wrote, adding that further legally permissible tariffs would be announced in the coming months.
Hours after the court decision, Trump signed an executive order repealing the struck-down tariffs and issued a proclamation imposing a temporary 10% duty on most imports, with exemptions for critical minerals, metals, and energy products. The latest hike to 15% signals a renewed escalation in his global trade war, keeping international markets and trading partners on edge.