By TONY ROMM New Canadian tariffs targeting roughly $20 billion in U.S. imports officially snapped into place on Tuesday, the latest escalation in an increasingly costly trade war that has ensnarled two longtime allies. The duties apply to a variety of U.S. goods, including clothing, cheese, metal parts and wood products. The approach is meant to mimic the taxes that President Donald Trump imposed on Canada after trade talks between the two neighbors collapsed in acrimony last month. For now,…
