The Trump administration began punishing imports of steel and aluminum from around the world early Friday—but not metal coming from Argentina, Australia, Brazil, Canada, the European Union, Mexico and South Korea. An hour before the global tariffs took effect, the White House released proclamations signed by President Donald Trump that temporarily exempted select countries from the tariffs that he said were needed on national security grounds.

Source: Wall Street Journal March 23, 2018 21:00 UTC