The Justice Department on Wednesday
appealed a ruling by a federal judge that
struck down the mask mandate for mass transportation, following a recommendation by the US Centers for Disease Control and Prevention.
"It is CDC's continuing assessment that at this time an order requiring masking in the indoor transportation corridor remains necessary for the public health," the CDC said in a statement. "CDC will continue to monitor public health conditions to determine whether such an order remains necessary. CDC believes this is a lawful order, well within CDC's legal authority to protect public health."