The department shares antitrust authority with the Federal Trade Commission, whose new liberal leadership has drawn much of the early spotlight. Yet in recent months the DOJ has blocked a major insurance-industry merger between Aon PLC and rival Willis Towers Watson PLC; filed an aggressive challenge to a partnership between American Airlines Group Inc. and JetBlue Airways Corp. ; and withdrawn from a real-estate industry settlement in order to take a deeper look at whether industry practices keep some broker commissions artificially high.
Justice Department Makes Quiet Push on Antitrust Enforcement
