 This Bloomberg Money Minute is brought to you by the Law Office of Kelm and Reuter, attorneys that make a difference, online at kelmreuter.com. This is a Bloomberg Money Minute. The Federal Trade Commission is getting ready to sue the three largest drug middlemen, pharmacy benefit managers, over their use of rebates for insulin and other drugs. The agency's been investigating whether that practice violates federal law. The three largest pharmacy benefit managers are units of CBS, Cigna, and UnitedHealth.