http://www.healthcaredive.com/news/battle-of-the-bulls-aetna-threatened-aca-participation-over-humana-merger/424640/

• In July, Aetna sent a letter to the Justice Department insinuating it would leave the ACA market if its pending merger with Humana was blocked by the DOJ, The Huffington Post reported.
• Aetna announced late Monday it was exiting nearly 70% of the ACA markets it participated in next year (parsing down 778 counties to 242).
• On Monday, CEO Mark Bertolini cited losses in the millions as the reason for the decision. However, the July letter obtained by The Huffington Post implies the decision was more influenced by the Justice Department lawsuit.