Air Transport Association of America, Inc., dba Airlines for America v. Washington Department of Labor & Industries

Whether the Airline Deregulation Act preempts neutral state laws only where those laws "bind" an airline to a "particular" price, route or service (as the U.S. Court of Appeals for the 9th Circuit held), or whether it preempts any state law that has a "significant impact" on carrier prices, routes or services even if that impact "is only indirect" (as the Supreme Court in Morales v. Trans World Airlines, Inc. and several courts of appeals have held).