LOS ANGELES - Amid the sharp rise in COVID-19 cases in many states across the U.S., more national retailers have rolled out new policies that will require customers to wear facial coverings while shopping in stores.Here are some of the major retailers that have implemented facial covering requirements for shoppers:CostcoIn late April, Costco updated its policy page to reflect its new mask policy, which stated that all “Costco members and guests must wear a mask or face covering that covers the mouth and nose at all times.” The new health guideline was implemented in all Costco stores nationwide and highlighted that facial coverings did not replace the need for social distancing."This requirement does not apply to children under the age of 2.