The Standing Rock Sioux Tribe asked a judge on Tuesday to block an easement granted by President Trumpâs administration that allowed the Dakota Access Pipeline to go forward. The tribe contended in court documents that the U.S. Army Corps of Engineers committed to conduct an environmental review of the project but were rushed to approve it when Trump took office. âWithin a few days of his inauguration, the new president abandoned this commitmentâperpetuating our nationâs pattern of broken promises to the Tribeâand directed the Army to âreview and approveâ pipeline permits on an expedited basis,â the tribe said in documents filed in U.S. District Court in Washington, D.C.