President Donald Trump told airline and airport executives Thursday that he supports privatizing America’s air traffic control system, according to a top airline industry lobbyist who was in the meeting. Nick Calio, president and CEO of Airlines for America, the trade association that represents the major airlines, said after the White House meeting that Trump was “extraordinarily positive” when airline executives urged him to spin off air traffic control operations from the Federal Aviation Administration and place them under the control of a private, nonprofit corporation.