A US federal court has dealt President Trump a blow, ruling his sweeping tariffs illegal, stating he exceeded his authority by declaring trade deficits as national emergencies. While the tariffs remain during appeal to the Supreme Court, businesses face continued uncertainty. A potential $159 billion refund looms if the ruling stands, weakening Trump’s negotiating power. A US federal court has dealt President Trump a blow, ruling his sweeping tariffs illegal, stating he exceeded his authority by declaring trade deficits as national emergencies. While the tariffs remain during appeal to the Supreme Court, businesses face continued uncertainty. A potential $159 billion refund looms if the ruling stands, weakening Trump’s negotiating power.