On February 14, 2013, AMR Corporation and US Airways Group officially announced that the two companies would merge to form the largest airline (and airline holding company) in the world, with bondholders of American Airlines parent AMR owning 72% of the new company and US Airways shareholders owning the remaining 28%. The combined airline would carry the American Airlines name and branding, while US Airways' management team, including CEO Doug Parker, would retain most operational management positions, and the headquarters would be consolidated at American's current headquarters in Fort Worth, Texas. The merger would create the world's largest airline, which, along with United Airlines and Delta Air Lines, would control three-quarters of the U.S. market. Bankruptcy judge Sean Lane approved the merger in March while refusing to approve American CEO Tom Horton's $20 million golden parachute as being "inappropriate".
The United States Department of Justice, along with attorneys general from six states and the District of Columbia, filed a lawsuit in August 2013 seeking to block the merger, arguing that it would mean less competition and higher prices. Both American Airlines and US Airways said that they would fight the lawsuit and continue with their merger after regulatory approval. On November 12, the airlines reached a settlement with the U.S. Justice Department and several state attorneys general to settle the lawsuit and allow the merger to be finalized.
An antitrust suit, filed by a group of 40 passengers and travel agents, also sought to block the merger. However, American's bankruptcy court judge refused to enjoin the two airlines from merging, saying that the group did not demonstrate that the merger would irreparably harm them. The plaintiffs' lawyer appealed and was turned down at the U.S. District Court level and was further rebuffed at the Supreme Court after Justice Ruth Bader Ginsburg denied a stay request filed by him.