Costco membership cards

Costco woes open path for Sam’s

BENTONVILLE, Ark. — Costco Wholesale Corp.’s loss has been Sam’s Club’s gain. With Costco customers frustrated by problems with the Washington-based chain’s new Visa card, Sam’s accepted Costco membership cards through July 4. Sam’s action came after many Costco customers never received the Visa card from Citigroup Inc. that was supposed to replace their American