US Imposes Tariffs on the EU, Mexico, and Canada
 US President Donald J. Trump’s administration announced   on May 31 that it will no longer exempt Canada, Mexico, and the  European Union from previously announced tariffs on steel and aluminum  imports. This means tariffs—25 percent on imports of steel and 10  percent on imports of aluminum—will go into effect at midnight on June  1. The decision will strain US ties with some of its closest allies and  has already sparked retaliation.