New Delhi, Nov. 6 -- The US Supreme Court on Wednesday (November 5) grilled the lawyer representing President Donald Trump over the legality of his administration's sweeping tariffs, in a case with far-reaching implications for the global economy and executive authority.

The case centers on Trump's unprecedented use of the International Emergency Economic Powers Act (IEEPA), a 1977 law designed for national emergencies, to impose tariffs on nearly all US trading partners. Lower courts previously ruled that the administration exceeded its authority, and businesses affected by the tariffs, along with 12 mostly Democratic-led states, challenged the move.

Solicitor General D. John Sauer, representing Trump, faced pointed questions from both...