As the airline industry has grown to be more global in scope, to network their passengers around the world, the competitors have formed alliances.
Foreign Air Carrier Permit
After 3 years, Norwegian Air International (NAI) was issued the final grant of foreign air carrier authority by the US DOT. NAI’s bureaucratic voyage to the U.S. has been an exceedingly slow process.
What DoT may/may not do in response to the Norwegian Air proposal under a diplomatic document which the US initiated to spread aviation competition.