The legal foundation for a significant portion of Donald Trump’s trade war has crumbled after a federal appeals court ruled his broad-based tariffs illegal. The court found that the former president wrongfully used a law intended for national security emergencies to pursue his protectionist economic goals.
The 7-4 decision targets tariffs imposed under the International Emergency Economic Powers Act (IEEPA), which Trump used to apply a 10% baseline duty on most imports worldwide. The court stated that using a trade deficit as the pretext for a national emergency to invoke IEEPA was an improper and unauthorized use of the statute.
This legal defeat has profound implications, potentially nullifying informal trade deals struck with allies who sought to escape the harshest effects of the tariffs. These agreements, which were central to Trump’s transactional approach to diplomacy, are now built on a questionable legal footing. The court’s ruling supports the argument that the president cannot unilaterally create and impose tariffs without explicit congressional approval.
As the case heads toward an inevitable Supreme Court appeal, businesses and consumers face continued uncertainty. The ruling does not affect the separate tariffs on steel and aluminum, but it challenges the executive branch’s ability to sidestep Congress on major economic policy. The question of whether importers will be refunded billions in paid duties now moves to the forefront.