WASHINGTON – US President Donald Trump has announced plans to impose a 15% global tariff on all imports, escalating his response to a U.S. Supreme Court ruling that struck down his previous trade measures.
Trump initially said on Friday he would introduce a 10% levy to replace the tariffs invalidated by the court. But in a post on Truth Social on Saturday, he said the rate would rise to the maximum 15% allowed under a little-used trade law.
The tariffs are set to take effect on Tuesday, 24 February, and can remain in place for roughly five months before requiring congressional approval.
The move follows a 6–3 Supreme Court decision finding that Trump exceeded his authority by imposing sweeping global tariffs under the 1977 International Emergency Economic Powers Act. The court ruled the law does not grant the president power to levy tariffs.
Trump criticized the judgment as “ridiculous” and “extraordinarily anti-American,” saying his administration would act quickly to restore the duties.
The new rate could complicate trade arrangements with countries such as the UK and Australia, which had previously agreed to a 10% tariff framework with Washington.
Chief Justice John Roberts joined the court’s three liberal justices, along with Trump nominees Amy Coney Barrett and Neil Gorsuch, in the majority. Justices Clarence Thomas, Brett Kavanaugh and Samuel Alito dissented.
