The National Retail Federation issued a statement Wednesday encouraging all retailers to adopt a nationwide policy that requires customers to wear face coverings or masks to protect the health and well-being of customers, associates and partners during the coronavirus pandemic. Starting Monday, shoppers in Walmart and Sam’s Club stores nationwide are required to wear masks, the company announced. On Wednesday, Starbucks and Best Buy started requiring all shoppers to wear face masks in their stores because of the coronavirus pandemic. Other chains that have implemented nationwide mask mandates include Apple, BJ’s Wholesale Club and Costco.