Trump administration claims a reversal could prompt retaliation, refund demands from nations facing hefty tariffs since early this year

The US Supreme Court agreed on Tuesday to review a ruling that struck down most of President Donald Trump’s tariffs, fast-tracking a case that will determine whether the duties – still in effect – stand or fall by year’s end.

The decision sets up a high-stakes test of presidential power on trade, a hallmark of Trump’s economic agenda.

The justices will hear a one-hour oral argument in early November, with the court’s 6–3 conservative majority – including three Trump appointees – poised to shape the outcome.

The “America First” president has repeatedly invoked emergency powers to impose sweeping tariffs on US trade partners, framing his country’s fentanyl-related deaths and trade deficits as emergencies.