A U.S. federal appeals court ruled that President Trump's global tariffs were illegally imposed under emergency law, challenging the administration's expansive trade measures. While the tariffs remain temporarily intact pending further appeals, the ruling injects uncertainty into international trade relations and could trigger demands for refunds. Trade adviser Peter Navarro denounced the decision, calling for Supreme Court review. The case could reshape tariff authority limits, impacting trillions in trade and future U.S. trade policy direction amid contentious domestic debates.