The Supreme Court will decide if Trump’s emergency tariff powers are legal, with potential replacement tariffs under other laws.

The constitutionality of President Donald Trump's use of emergency powers to impose broad tariffs—a move that has drawn criticism from around the world—will be decided by the U.S. Supreme Court. The administration intends to swiftly replace the tariffs with levies under other legal authorities, such as Section 301, 232, 122, and 338, each of which requires particular justifications, if the court invalidates the tariffs. The government has several options to uphold tariff policies, according to U.S. Trade Representative Jamieson Greer. In the meantime, UK Prime Minister Keir Starmer reiterated that Greenland is a part of Denmark and that Arctic security is a common NATO concern while denouncing Trump's threat to impose tariffs on European countries over Greenland.