The U.S. Supreme Court ruled that the President cannot unilaterally impose tariffs without Congressional approval, citing the International Emergency Economic Powers Act (IEEPA) does not grant such authority. This decision struck down tariffs imposed by the Trump administration on imports from China, Canada, and Mexico, affirming that tariffs fall under Congress’s exclusive power over taxes. The ruling reinforces the principle that significant economic powers must be explicitly delegated by Congress, limiting the President’s power to act during emergencies.