Per Das Wiki [1]: "The government had little choice but to return service to the commercial airlines, but did so with several new conditions. The Air Mail Act of June 12, 1934, drafted at the height of the crisis by Black (and known as the "Black-McKellar bill"), restored competitive bidding, closely regulated airmail labor operations,[n 28] dissolved the holding companies that brought together airlines and aircraft manufacturers, and prevented companies that held the old contracts from obtaining new ones."

[1] https://en.wikipedia.org/wiki/Air_Mail_scandal#Effects_on_th...