President Donald Trump raised levies on US imports of steel and aluminum to 50% from 25% as he ratcheted up his campaign to reshape the country’s trade ties with the rest of the world.

That’s about to double. In a proclamation issued Tuesday, Trump confirmed that the U.S. will begin taxing nearly all steel and aluminum imports at 50% after the clock strikes midnight Wednesday. Steel and aluminum from the U.K., meanwhile, will continue to be levied at 25% due to a recent trade deal.