Delta Air Lines CEO Richard Anderson said the biggest threat to Delta's success is that the U.S. does not have a strong national airline policy. He added: "[T]ravel and tourism is the No. 3 driver of GDP in this country. One, we've got to have a modernized air traffic control system. No. 2, we are the highest-taxed industry in the U.S. ... No. 3, we need to make sure that the commercial regulations that affect our industry aren't burdensome. Four, we need a level playing field [with] state-owned and state-subsidized enterprises around the world to be certain that we can compete on an equal basis. If you look at countries like China, and the Middle East and Latin America, they view aviation as one of the most important strategic assets for their country in terms of economic development. In the U.S., I think we may take that a bit for granted."