Jordan Campbell’s enforcement efforts have pressured healthcare providers even as they have hit roadblocks in court.

The Justice Department has opened a criminal antitrust investigation into whether major meatpacking companies engaged in conduct that harmed consumers and ranchers, The Wall Street Journal reports.

Every few weeks, millions of Americans open their digital inboxes. They look through physical mail to discover a document written in dense, formal language. The notice informs them that they belong to ...