A new tariff rate imposed by President Donald Trump on imported goods has taken effect, reflecting a significant shift in U.S. trade policy. This follows a Supreme Court ruling that determined the increased tariffs, initially set at 10%, were illegal. The Court ruled that Trump exceeded his authority by implementing these tariffs under the International Emergency Economic Powers Act (IEEPA), which is intended for national emergencies.

In his announcement, Trump indicated plans to raise the tariff from 10% to 15%, though no timeline was provided for this increase. The Supreme Court's recent decision is significant as it places constraints on presidential powers when it comes to trade measures. The ruling specifies that Trump had overstepped his legal bounds in implementing what are classified as punitive tariffs against several countries.

This context underlines the ongoing tension between the executive branch's trade authority and the legal framework that governs such powers in the U.S. The ramifications of this decision may reverberate through international trade relations, as countries adjust their strategies in response to the newly imposed tariffs and the legal limitations placed on the U.S. government's decision-making processes regarding international trade policies.