The U.S. Supreme Court is set to review the legality of President Trump's tariffs, which have been challenged in lower courts. The legal argument centers around the 'major questions doctrine,' which limits executive power in matters of significant economic impact unless explicitly authorized by Congress. This doctrine has previously been applied in cases against President Biden, indicating a potential precedent that could affect Trump's tariffs if the court rules against them.

Recent rulings have already blocked many of Trump's tariffs, raising concerns about their future and the broader implications for U.S. trade policy. The administration argues that these tariffs are necessary for national security and economic stability, citing the International Emergency Economic Powers Act. However, legal experts suggest that the court may find these tariffs unauthorized by Congress, which could lead to significant changes in U.S. trade relations and economic conditions.