U.S.: How Trump's Duties Will Test U.S. Allies' Mettle

The collateral damage from the White House's latest trade moves will resonate globally. U.S. President Donald Trump has signed two presidential proclamations that will place a 10 percent tariff on aluminum and a 25 percent tariff on steel starting March 23. Australia, Brazil, Canada, the European Union, Japan, Mexico and South Korea were clamoring for exemptions from the tariffs before they were signed, but the White House has offered initial exemptions for only Canada and Mexico....