The U.S. Supreme Court issued a pair of decisions in EPA v. Calumet Shreveport Refining and Oklahoma v. EPA on June 18, 2025, resolving two related circuit splits regarding proper venue for challenging certain U.S....more
On Tuesday, the District of Columbia Court of Appeals vacated EPA’s “Close-Out Rule,” which basically concluded that upwind states contributing to exceedances of the National Ambient Air Quality Standard for ozone in downwind...more