The U.S. has self-initiated what the Commerce Department is calling “historic” anti-dumping and countervailing duty investigations into imports of common alloy aluminum sheet from China. Commerce Secretary Wilbur Ross said the investigations, “the first in over a quarter century, were self-initiated pursuant to the authority granted to the Secretary under the Tariff Act of 1930, as amended.” “President Trump made it clear from day one that unfair trade practices will not be tolerated under this administration, and today we take...