DOJ Sues To Block Health Insurer Mergers; Anthem, Aetna, Humana Vow to Fight; Cigna, Maybe Not

The battle is on! The DOJ is suing to block the merger of four of the nation's largest health insurers. Anthem ( ANTM ), Aetna ( AET ) and Humana ( HUM ) said they will fight the DOJ in court. Cigna ( CI ), however, says it is reviewing its options. Read More>>