Meanwhile, in Canada, Prime Minister Mark Carney's government threatened to hike tariffs by late July on US imports of steel and aluminum, weeks after Trump ballooned US levies on

The U.S. Supreme Court declined on Friday to speed up its consideration of whether to take up a challenge to President Donald Trump's sweeping tariffs even before lower courts have ruled in the dispute.

In a separate and broader challenge, the Court of International Trade also ruled against the administration’s tariffs program. A different appeals court, the Federal Circuit, is set to hear arguments in that case next month. Both lower court rulings have been paused, allowing Mr. Trump to press forward with his tariffs.