People shop at a Walmart store in Sugar Land, Houston, Texas, U.S., July 16, 2020. Walmart, the largest retailer in the U.S. requires customers to wear masks when shopping at its stores including Sam's Club, starting July 20. Target and CVS Health announced similar policies Thursday after Walmart's move. (Photo/China News Service)
A man wearing mask enters a Walmart store in Sugar Land, Houston, Texas, U.S., July 16, 2020. Walmart, the largest retailer in the U.S. requires customers to wear masks when shopping at its stores including Sam's Club, starting July 20. Target and CVS Health announced similar policies Thursday after Walmart's move. (Photo/China News Service)
