United says it will ban passengers who do not abide by its requirement to wear masks on board flights (UAL)

United Airlines United Airlines said it will ban passengers who refuse to wear a mask on board flights during the coronavirus pandemic. The length of the ban will be determined after a security incident review. Passengers will be warned multiple times and offered a mask before they are referred for the action. US airlines have come under criticism for failing to enforce mask requirements, but an industry trade group said Monday that more substantive enforcement is coming. Visit Business Insider'...