Trump made his latest tariff announcement at a US Steel Corp facility in West Mifflin, Pennsylvania, on Friday. "At 25 percent, [US trading partners] can sort of get over that fence," he said. "At 50 percent, nobody's getting over that fence."

Beginning tomorrow, the U.S. will implement a 50% tariff on imported steel and aluminum, doubling the previous rate.  As Reuters reports, this move―announced by President Donald Trump―follows his accusation that China breached an agreement to reduce mutual trade barriers.

Trump announced that he would increase levies on steel imports from 25 per cent to 50 per cent, saying that the move would give a boost in domestic steel production and improve national output while r