UnitedHealth Group Inc.'s $3.3 billion acquisition of Amedisys is being targeted by federal antitrust regulators who say the merger would hurt competition in the home health care sector. The U.S. Department of Justice said Tuesday it was suing to block ...

The U.S. Justice Department and four states sued Tuesday to block UnitedHealth Group’s proposed $3.3 billion acquisition of Amedisys, a Louisiana-based home health company that would further United’s push into the home care and hospice markets.

Minnesota-based UnitedHealth Group Inc. is the focus of an antitrust lawsuit filed on Tuesday by the United States Department of Justice.