NEW YORK —

The U.S. Supreme Court is set to hear oral arguments in a case testing the legal authority of President Donald Trump to use emergency powers to impose tariffs. This comes after challengers argued in lower courts that the use of the International Emergency Economic Powers Act to tax imports from other countries was unlawful.

The International Emergency Economic Powers Act, or IEEPA, which was created under the Carter administration, gives the president authority to regulate a variety of economic transactions following a declaration of national emergency . The IEEPA has been invoked by the Trump administration to impose sweeping tariffs.

It has been nine months since the president first announced a round of tariffs on imports from Canada, Mexico and China, and we are now seei

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