‘An important source of income’: Small businesses worry as U.S. ends duty-free exemption CTV NewsDuty-free ‘de minimis’ shipping to the U.S. is now a thing of the past – National Global NewsOnline Shopping May Never Be the Same The AtlanticDe minimis: How US shoppers will be hit as the tariff exemption ends BBCSmall businesses that relied on duty-free U.S. shipping wonder if they can survive without it CBC