A federal appeals court struck down tariffs that President Trump had imposed by invoking a decades-old law.

A federal appeals court struck down tariffs that President Trump had imposed by invoking a decades-old law.

An appeals court ruled on Friday that many of President Trump’s most punishing tariffs are illegal, delivering a major new setback to the administration’s global trade war.

The decision is a big blow to President Trump’s trade policies, but the judges left the duties in place for now to allow time for a likely appeal to the Supreme Court.