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Justice Amy Coney Barrett had pointed questions Wednesday about the law Donald Trump invoked to impose global tariffs, joining several other justices on the right and left in voicing skepticism about the president’s ability to use a tool he has deemed critical to carrying out his economic agenda.

Solicitor General John Sauer repeatedly argued during the lengthy 2½-hour oral arguments that the emergency law Trump used to enact the tariffs for nearly every U.S. trading partner contained language about regulating imports, which Sauer said included using tariffs. The relevant statute permits the president to "regulate … nullify [and] void … importation," but it does not use the word "tariff." Barrett pressed Sauer on this point

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