Trump Is Using Emergency Law to Impose Tariffs. Is That Legal?

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President Donald Trump’s trade tariffs have roiled financial markets, prompted an outcry from world leaders and raised the specter of a US recession. The blowback eventually prompted Trump to pause some of the most punishing tariffs for 90 days. With every move, the US president underscores that he is calling the shots, though the US Constitution gives Congress the last word in setting import duties.