U.S. health officials launched an investigation into Humana after the Louisville-based company mailed a letter to patients enrolled in its Medicare Advantage plans, alerting them that President Obama’s health overhaul could eliminate important benefits of the program.

The federal government resorted to bullying tactics when it ordered an investigation of Humana—one of the country’s biggest private insurers—for its decision to send customers a letter alerting them about pending health reform legislation, a leading Republican charged Wednesday. Full Piece