Costco Wholesale faces a proposed nationwide class-action lawsuit filed on March 11, 2026. The suit demands customer refunds for price increases linked to Trump administration import tariffs. This action follows a U.S. Supreme Court ruling that the tariffs exceeded government authority.
The Illinois federal court filing argues Costco should not "double recover" by keeping government refunds while consumers paid the higher costs. Costco currently joins thousands of companies suing the administration to reclaim paid duties.