
A US federal court has ruled that President Donald Trump overstepped his authority by imposing global tariffs, in a major blow to a key part of his economic policies.
The Court of International Trade ruled that an emergency law invoked by the White House does not provide unilateral authority to impose tariffs on nearly every country.
The Manhattan-based court said the US Constitution gives Congress exclusive powers to regulate commerce with other nations and this is not superseded by the president’s remit to safeguard the economy.
The Trump administration can appeal the ruling in federal court.
The lawsuit, filed by the nonpartisan Liberty Justice Center on behalf of five small businesses that import goods from countries targeted by the duties, was the first major legal challenge to Trump’s so-called “Liberation Day” tariffs.
Global financial markets have been on a rollercoaster ride since Trump announced the sweeping tariffs on 2 April as some measures were reversed or reduced as the White House negotiated with foreign governments.
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