The vast majority of President Donald Trump’s global tariffs were deemed illegal and blocked by the US trade court, dealing a major blow to a pillar of his economic agenda.

The White House called for the Supreme Court to overturn judicial rulings blocking most of the tariffs Trump has imposed to negotiate trade agreements.

As Trump’s MAGA allies blast a hard-hitting ruling against his tariffs, a lawyer for the challengers explains how it reveals serious weaknesses in their legal justification—and what the prospects are for stopping them now.

Markets briefly soared after a ruling from the New York–based Court of International Trade struck down many of the Trump administration’s tariffs. On Thursday, a court of appeals granted the administration an emergency stay,