The U.S. Supreme Court began hearing arguments on Wednesday over the legality of Donald Trump's sweeping tariffs in a case with implications for the global economy that marks a major test of the Republican president's powers and the willingness of the justices to let him push the limits of his authority.

The Supreme Court will now decide whether President Donald Trump 's sweeping tariff policy is legal.

U.S. Supreme Court justices raised doubts on Wednesday over the legality of Trump's tariffs in a case that has broad implications for how Trump governs.