(December 8, 2016, 9:45 AM EST) -- WASHINGTON, D.C. — Two Native American tribes on Dec. 5 filed a brief in the District of Columbia Circuit U.S. Court of Appeals, arguing that a decision by a district court that denied the tribes’ motion for injunctive relief against the U.S. Army Corps of Engineers and the private company building the Dakota Access Pipeline (DAP) should be vacated (Standing Rock Sioux Tribe, et al. v. U.S. Army Corps of Engineers, et al., No. 16-5259, D.C. Cir.)....