Environmentalists, Indigenous bands will continue to appeal Line 3 decision. The Department of Commerce will not The move ends a legal challenge that began in former Minnesota Gov. Mark Dayton's administration was continued by Gov. Tim Walz's administration. 5:32 pm, Jul. 15, 2021 × Protesters chant and raise signs as they march on Duluth's Lakewalk on Sept. 28, 2019, after a rally at Gichi-ode' Akiing in protest of Enbridge Line 3. (Tyler Schank / File / News Tribune) Environmental groups and Indigenous bands opposed to Enbridge's Line 3 oil pipeline have asked the Minnesota Supreme Court to overturn a lower court's ruling that said regulators relied on the correct demand forecast when approving the pipeline.