The tariffs farce continues.
The tariffs can remain in place until mid-October to allow the Trump administration time to request the Supreme Court take up the case.
www.bbc.com
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.
The ruling affects Trump's "reciprocal" tariffs, imposed on most countries around the world, as well as other tariffs slapped on China, Mexico and Canada.
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".
The ruling will not take effect until 14 October to give the administration time to ask the Supreme Court to take up the case.
Trump criticised the court and its ruling on Truth Social, saying: "If allowed to stand, this Decision would literally destroy the United States of America."
"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," he wrote.
"If these Tariffs ever went away, it would be a total disaster for the Country. It would make us financially weak, and we have to be strong."
He added that other countries have imposed tariffs on the US, and predicted that the decision would be overturned by the Supreme Court.
Trump had justified the tariffs under the International Emergency Economic Powers Act (IEEPA), which gives the president the power to act against "unusual and extraordinary" threats.
Trump has declared a national emergency on trade, arguing that a trade imbalance is harmful to US national security. But the court ruled that imposing tariffs is not within the president's mandate, and that they are "a core Congressional power".