US Supreme Court Questions Legality of Trump’s Tariffs Under Emergency Powers

WASHINGTON — The US Supreme Court justices expressed concern on Nov 5 over the legality of President Donald Trump’s sweeping tariffs imposed under the International Emergency Economic Powers Act (IEEPA). The case could reshape the balance between presidential authority and Congressional control over trade.

Both conservative and liberal justices questioned whether the 1977 law, intended for national emergencies, grants the president power to impose tariffs on foreign goods. Chief Justice John Roberts noted that tariffs function as taxes, traditionally under Congress’s authority. Several justices referenced the “major questions” doctrine, which requires clear legislative approval for actions of major economic significance.

Supreme Court

Conservative Justice Amy Coney Barrett pressed the administration’s lawyer to cite precedent for using IEEPA to justify tariffs, while liberal Justice Ketanji Brown Jackson argued the law was designed to limit, not expand, executive power.

The Trump administration defended its actions, citing national security threats from trade deficits and the need to deter “ruthless trade retaliation.” A ruling against Trump could force his administration to seek alternative legal justifications to maintain tariffs already imposed on key trading partners, including China, Canada, and Mexico. The court’s decision, expected within months, may redefine presidential authority in foreign trade policy.

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