CQ adds, "The regulations were finalized in January and took effect this month," but implementation of the law could be delayed because "three companies that manage mental health services on behalf of large insurance companies [have] filed a federal lawsuit alleging that the departments of Labor, Treasury, and Health and Human Services improperly fast-tracked the rule-making -- and that the rules they came up with would diminish the quality of care for the mentally ill." In contrast, "Mental health groups say the departments have done a pretty good job with the rules and it's time to move on."