The Donald Trump administration’s sweeping tariff strategy has been dealt a powerful legal blow after the Supreme Court limited the use of emergency powers to impose worldwide import taxes, a decision that could redefine how far presidential authority extends over international commerce. The ruling, led by Chief Justice John Roberts, found that broad global tariffs enforced without clear congressional approval exceeded constitutional limits. Despite the court’s intervention, the White House has moved forward with a policy reset, introducing a revised tariff framework that sets a 10% baseline on global imports. Key trade partners, including India and Canada, remain within the broader structure, though negotiated rates and terms vary depending on bilateral agreements.