(May 18, 2017, 3:00 PM EDT) -- TULSA, Okla. — The federal government on May 15 filed a brief in Oklahoma federal court contending that a lawsuit brought by a Native American tribe related to oil and gas leases, as well a hydraulic fracturing drilling permits on Indian land, should be dismissed for lack of subject matter jurisdiction (Pawnee Nation of Oklahoma, et al. v. Ryan Zinke, et al., No. 16-cv-697, N.D. Okla.)....