Customer sues Costco for tariff refunds

The lawsuit is an indication of the complexities looming over a potential $166bn in tariff refunds.

A Costco member filed a lawsuit claiming the retailer should reimburse all customers who paid higher prices due to President Trump's tariffs, following the Supreme Court's ruling that some tariffs were unlawful.

A proposed class action filed in Illinois federal court alleges that Costco customers are entitled to refunds for higher prices paid due to tariffs declared unlawful by the Supreme Court.

A nationwide class action lawsuit filed against Costco seeks refunds for U.S. customers who paid higher prices due to tariffs imposed under the International Emergency Economic Powers Act.