美国交通部长肖恩·达菲、主要航空公司及其他团体周一敦促国会迅速批准另外300亿美元，用于空中交通管制塔台、软件和数字化升级以及改善机场设施。
US Transportation Secretary Sean Duffy, major airlines and other groups on Monday urged Congress to quickly approve another $30 billion for air traffic control towers, software and digital upgrades as well as improving airport facilities.