TheU.S. Department of Justice is suing to block the planned of and , according to a docketreport created July 21.

Thefederal government is joined by eight states and the District of Columbia inchallenging the deal, which is one of two multibillion-dollar health insurancedeals seeking approval. The Justice Department on the same day Anthem Inc. and Cigna Corp. to block their planned .

Delaware,Florida, Georgia, Illinois, Iowa, Ohio, Pennsylvania and Virginia are thestates listed as plaintiffs in the lawsuit, which is filed in the U.S. DistrictCourt for the District of Columbia.