Twelve Democratic attorneys general sued the Trump administration Thursday to block a new rule making it easier for small firms and individuals to band together in association health plans free from many ACA market rules. The suit, filed in U.S. District Court for the District of Columbia, alleged the final rule issued by the U.S. Department of Labor last month violated the Administrative Procedure Act, the ACA, and the Employee Retirement Income Security Act. This represents the latest legal effort to block Trump administration moves to roll back coverage expansions and consumer protections under the ACA. Last month, advocacy groups won a federal ruling invalidating CMS’s approval of Kentucky’s Medicaid waiver requiring beneficiaries to work, go to school or participate in volunteer activities. (Harris Meyer, Modern Healthcare)