(December 13, 2016, 12:44 PM EST) -- BALTIMORE — Parties to a suit claiming that $22 million in potential payments under the Patient Protection and Affordable Care Act (ACA) risk corridor threaten the viability of a cooperative insurer asked a federal judge in Maryland to stay the action on Dec. 1 (Evergreen Health Cooperative Inc., v. United States Department of Health and Human Services, et al., No. 16-2039, D. Md.)....