UPDATE 2-U.S., Canada aboriginal tribes form alliance to stop oil pipelines
(Adds protest in Washington, details of Dakota Access pipeline)
By Rod Nickel
WINNIPEG, Manitoba, Sept 22 (Reuters) - Aboriginal tribes from Canada and the northern United States signed a treaty on Thursday to jointly fight proposals to build more pipelines to carry crude from Alberta's oil sands, saying further development would damage the environment.
The move came as Native American tribes on Thursday took their fight to Washington to stop development of the $3.7 billion Dakota Access oil pipeline, which would cross federally managed and private lands in North Dakota, South Dakota, Iowa and Illinois.
Last week the U.S. Justice Department intervened to delay construction of the pipeline in North Dakota.
The Treaty Alliance Against Tar Sands Expansion was signed by 50 aboriginal groups in North America, who also plan to oppose tanker and rail projects in both countries, they said in a statement.
Targets include projects proposed by Kinder Morgan Inc , TransCanada Corp and Enbridge Inc.
While aboriginal groups have long opposed oil sands development, the treaty signals a more coordinated approach to fight proposals.
Among the treaty's signatories is the Standing Rock Sioux tribe who opposes the Dakota pipeline. Continued...