(March 1, 2017, 1:32 PM EST) -- WASHINGTON, D.C. — Thirteen members of the Great Sioux Nation sought to intervene Feb. 27 in a District of Columbia federal action challenging construction of the Dakota Access Pipeline (DAPL) so they can file a suit alleging that President Donald Trump is personally liable for damages for illegally expediting approval of the project while having a financial interest in a pipeline company (Standing Rock Sioux Tribe, et al. v. U.S. Army Corps of Engineers, et al., No. 16-1534, D. D.C.)....