How U.S. duties targeted at China are disrupting Canadian businesses

Open this photo in gallery: Blair Nadeau, whose products are made entirely in Canada, has spent hundreds of dollars and countless hours buying and preparing new tags and labels, creating Made-in-Canada stickers, and scrambling to ensure that the origins of all products were properly declared. Ms. Nadeau in her home studio in Brampton, Ont., on May 16.Galit Rodan/The Globe and Mail Blair Nadeau was holding her breath as she watched U.S. President Donald Trump threaten to cancel the "de minimis" exemption in February. The proposed move would eliminate a rule that enabled businesses such as hers to thrive by sending…