NEW YORK - A group of individuals who have already sued bankrupt AMR Corp. opposing its proposed merger with US Airways Inc. on antitrust grounds on Aug. 22 filed a brief arguing that the deal should not be confirmed while there is an additional antitrust lawsuit pending by the U.S. Department of Justice (DOJ) (In Re: AMR Corporation, No. 11-015463, Chapter 11, S.D. N.Y. Bkcy.).