(July 6, 2017, 2:27 PM EDT) -- TULSA, Okla. — The Pawnee Nation of Oklahoma on June 29 filed a brief in Oklahoma federal court arguing that its case against federal agencies alleging that hydraulic fracturing permits were improperly granted should not be dismissed because its claim is valid under federal law (Pawnee Nation of Oklahoma, et al. v. Ryan Zinke, et al., No. 16-cv-697, N.D. Okla.)....