Customers are hoping that consumer protection laws will require Costco to refund money they paid due to tariffs. The proposed class includes “all persons in the United States who purchased goods from Costco during the period February 1, 2025, through February 24, 2026, that were subject to tariffs” that Donald Trump unlawfully imposed under the International Emergency Economic Powers (IEEPA) Act, the group said. If customers win, Costco could owe much more than just that. Branding Costco’s plan ...