Leaders of both parties on the House Committee on Transportation and Infrastructure, have urged airlines to adopt mask requirements for all crew and passengers. In a letter to the trade group Airlines for America, Rep. Peter DeFazio, an Oregon Democrat and chairman of the committee; and Rep, Sam Graves, a Missouri Republican and ranking member of the committee, said it is critical that member airlines have in place strong and consistent policies that limit the spread of Covid-19 and protect the safety and health of frontline airline workers and passengers. The letter came a day after JetBlue became the first US carrier to mandate masks for passengers. The letter was endorsed by the Association of Professional Flight Attendants, which represents American Airlines flight attendants. Julie Hedrick, the union’s president, said that masks not yet being required “is putting people’s lives at risk.” Some foreign airlines, including Lufthansa, are implementing mask requirements.