Mask up or you won't be allowed to board a plane, train or bus. President Biden signed an executive order Thursday, requiring passengers to wear face coverings during interstate travel.
It's one of 10 executive orders signed by the president today aimed at addressing the COVID-19 pandemic, which has killed more than 400,000 Americans.
Airlines and their employees have been seeking such a federal mask mandate almost since the pandemic began, as they've struggled to deal with score of passengers who refuse to follow the airlines' own mask-wearing rules.