Most of the justices, both conservative and liberal, said Congress, not the president, had the power to impose taxes and tariffs.

The U.S. Supreme Court will hear arguments Wednesday over President Donald Trump’s sweeping tariffs, putting a tool at the center of his economic and foreign policy agendas squarely before the high c...

The companies challenging the policy say the on-again-off-again tariff announcements have driven costs — and uncertainty — to intolerable levels.