Mealey's (June 10, 2015, 8:25 AM EDT) -- WASHINGTON, D.C. — The federal government on Feb. 12, 2104, filed a brief with the District of Columbia Circuit U.S. Court of Appeals urging the court to affirm a decision granting summary judgment in its favor in a suit challenging an Internal Revenue Service regulation imposed under the Patient Protection and Affordable Care Act (ACA) that extends eligibility for premium assistance subsidies to people who purchase health insurance through exchanges established by the ACA (Jacqueline Halbig, et al. v. Kathleen Sebelius, et al., No. 14-5018, D.C. Cir.)....