The Trump administration says it will go to the Supreme Court on Friday if it is unable to block the tariffs’ ruling.
Three judges ruled on Wednesday that Trump overstepped his authority when he used an emergency law to impose tariffs on nearly every country, in a major blow to his economic policies.
The ruling raises the real question about whether Trump’s wider so-called reciprocal tariffs will ever come into effect, writes our economics editor Faisal Islam.
The case was launched by a group of US businesses and states, and leaves the White House with 10 days to formally reverse the levies.
Moments after the ruling, the Trump administration said it was “not for unelected judges to decide how to properly address a national emergency”.
