U.S. President Donald Trump said on Friday that all tariffs he has imposed remain in effect, following a ruling by a U.S. Appeals Court that found most of tariffs illegal.

"ALL TARIFFS ARE STILL IN EFFECT! Today a Highly Partisan Appeals Court incorrectly said that our Tariffs should be removed, but they know the United States of America will win in the end," Trump wrote on Truth Social. He added that removing the tariffs would weaken the country financially and undermine U.S. manufacturers, farmers, and workers.

The 7-4 ruling by the U.S. Court of Appeals for the Federal Circuit in Washington, D.C., addressed tariffs imposed under the International Emergency Economic Powers Act (IEEPA), including “reciprocal” tariffs from April and a separate set from February against China, Canada and Mexico. The court said the statute does not explicitly grant the president authority to impose tariffs.

The appeals court allowed the tariffs to remain in place until 14 October to give the Trump administration a chance to appeal to the U.S. Supreme Court.

Trump has made tariffs a central tool of his trade policy, citing U.S. trade deficits and national economic security. He has also justified them as a measure to pressure other countries to curb illegal fentanyl exports.

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