( March 13, 2026, 2:14 PM EDT) -- CHICAGO — Costco Wholesale Corp., one of thousands of companies that sued the United States in 2025 seeking to halt tariffs put in place beginning in February of that year and seeking refunds for the International Emergency Economic Powers Act (IEEPA) duties plus interest, must return that money to consumers if they are successful in obtaining the refunds in light of the U.S. Supreme Court’s ruling in Learning Resources, Inc. v. Trump, an Illinois man and Costco member alleges in a class complaint filed in a federal court in the state....