In-N-Out Burger blasted the city of San Francisco's proof of COVID-19 vaccination requirements after the San Francisco Department of Health closed one of the popular California burger joint's locations for serving customers who were not carrying the proper papers. "On Thursday, October 14, the San Francisco Department of Public Health closed our restaurant at 333 Jefferson Street because In-N-Out Burger Associates (employees) were not preventing the entry of Customers who were not carrying proper vaccination documentation," In-N-Out Burger's chief legal and business officer, Arnie Wensinger, said in a statement. "Our store properly and clearly posted signage to communicate local vaccination...