President Donald Trump's aggressive trade agenda hit a significant snag this week when a federal appeals court ruled that most of his "reciprocal tariffs" are illegal.

The U.S. Court of Appeals for the Federal Circuit held Friday that Trump overstepped his presidential authority when he imposed levies on virtually every country in the world as part of his April 2 "liberation day" announcement.

Before court action, Trump's tariffs were set to affect roughly 69% of U.S. goods imports, according to the Tax Foundation . If struck down, the duties would impact just roughly 16%.

The ruling injects a heavy dose of uncertainty into a central tenet of Trump's economic agenda, which has rattled the global economy since April.

For now, the appeals court ruling states the duties on goods

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