# A US appeals court has ruled that most tariffs issued by US President Donald Trump are illegal, setting up a potential legal showdown that could upend his foreign policy agenda. In a 7-4 decision, the US Court of Appeals for the Federal Circuit rejected Trump’s argument that the tariffs were permitted under an emergency economic powers act, calling them invalid as contrary to law. It says imposing tariffs is not within the president’s mandate, but a core Congressional power. The ruling will not take effect until 14 October to give the administration time to take the case to the Supreme Court.
US court rules many of Trump’s global tariffs are illegal