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US tariff threat over Greenland faces test as Trump eyes court ruling

By Bradley Dress, Eliana Hubacker, Zack Budryk ( January 20, 2026, 22:05 GMT | Comment) -- President Donald Trump’s threat to impose tariffs on several European countries if they don't allow the US to acquire Greenland faces a critical legal-authority test as his administration’s use of emergency authorities to impose sweeping duties still lies before the US Supreme Court. President Donald Trump’s threat to impose tariffs on several European countries if they don't allow the US to acquire Greenland faces a critical legal authority test as his administration’s use of emergency authorities to impose sweeping duties still lies before the US Supreme Court. ...

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