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Trump says US might have to unwind trade deals with EU, others if it loses tariff case

Trump warned U.S. trade deals with EU, Japan, and South Korea may be unwound if Supreme Court upholds tariff ruling.

U.S. President Donald Trump reacts as he and the President of Poland Karol Nawrocki (not pictured) meet in the Oval Office at the White House in Washington, D.C., U.S., September 3, 2025. / REUTERS/Brian Snyder

President Donald Trump said on Sept. 3 the United States might have to "unwind" trade deals it has clinched with the European Union, Japan and South Korea, among others, if it loses a Supreme Court case on the legality of tariffs.

Trump, speaking to reporters at the start of a meeting with Polish President Karol Nawrocki, said his administration was asking the Supreme Court to reverse a U.S. appeals court ruling last week that found many of his tariffs were illegal.

Also read: Tariffs cause 'unprecedented' disruption to global trade rules, WTO chief says

Losing that case would leave the United States far poorer, and could jeopardize trade agreements made in recent months, he said, adding that he thought the administration would prevail.

"Our country has a chance to be unbelievably rich again. It could also be unbelievably poor again. If we don't win that case, our country is going to suffer so greatly, so greatly," he said.

Trump said his imposition of tariffs on most trading partners had paved the way for trade deals with the EU and others that were already completed, with others still being negotiated.

"We made a deal with the European Union where they're paying us almost a trillion dollars, and you know what? They're happy. It's done. These deals are all done," he said. "I guess we'd have to unwind them."

Trump's comments were his first suggesting that the trade deals reached with major trading partners could be invalidated if the Supreme Court lets Friday's ruling stand.

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