General Act, as amended ( 5 U.S.C. App. 3 ), to investigate allegations of fraud, including false statements to the government ( 18 U.S.C. 1001 ), by any person or entity that is subject to regulation by the Department of Transportation: Provided further , That the funds made available under this heading may be used to investigate, pursuant to section 41712 of title 49, United States Code: (1) unfair or deceptive practices and unfair methods of competition by domestic and foreign air carriers and ticket agents