Mealey's (April 11, 2018, 11:27 AM EDT) -- DENVER — Two owners of property on an Oklahoma Indian reservation cannot pursue class claims that the U.S. government approved oil and gas wells on the reservation in violation of environmental law due to lack of standing and insufficient pleadings, the 10th Circuit U.S. Court of Appeals ruled April 5 (Martha Donelson, et al. v. United States of America, et al., No. 16-5174, 10th Cir., 2018 U.S. App. LEXIS 8745)....