President Donald Trump announced plans to increase a temporary tariff on imports from all countries to 15%, up from the 10% rate introduced earlier this week. The move follows a Supreme Court decision that struck down parts of his previous tariff program under an economic emergency framework. The higher tariff would take effect immediately and could remain in place for up to 150 days under existing trade law.

Trump stated the administration would use the interim measure while working to implement new tariffs that comply with legal requirements. In a post on Truth Social, he claimed many countries had been "ripping" the U.S. off for decades. The temporary levy applies in addition to existing tariffs already in place, potentially compounding trade tensions with key partners.

The tariff increase signals a significant escalation in Trump's trade policy and may face legal challenges from affected parties. The move comes amid broader market concerns about trade uncertainty, with analysts warning that a 10% market drop could meaningfully dent U.S. consumption. The administration's willingness to push tariff rates to the maximum legally allowed level underscores the ongoing friction between executive trade authority and judicial oversight.