"The retailer is requiring all shoppers to wear face coverings beginning next week; of the more than 5,000 combined Walmart and Sam’s Club locations, roughly 65 percent sit in jurisdictions that already mandate masks, meaning employees at the remaining 35 percent — nearly 2,000 stores — will have to enforce the policy where law does not, a situation that has led to confrontations and close-range encounters that increase risk to workers." - Elazar Sontag