The Vermont Democratic Party fully supports the Standing Rock Sioux Nation's heritage and their work in North Dakota.
"It is paramount for public safety, and to prevent an environmental disaster, that the camps be cleared prior to a potential spring flood", GOP North Dakota Gov. Doug Burgum, a pipeline supporter, said in a statement issued Monday.
Last week, Veterans Stand announced plans to support the protesters camped out in North Dakota.
Correction: A previous version of this post's headline stated that the easement for the pipeline has been granted.
In a statement released on Tuesday night, the tribe said it would "vigorously pursue legal action to ensure the environmental impact statement order issued late a year ago is followed so the pipeline process is legal, fair and accurate".
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"While the EIS is exactly what we called for, we must ensure that it fully takes into consideration tribal treaty rights, natural resources, cultural and sacred places, socio-economical concerns, and environmental justice", read a statement from the Standing Rock Sioux after the comment period opened on January 18.
Hoeven said he spoke on Tuesday with Vice President Mike Pence and Speer about the easement.
President Donald Trump, who vowed during his campaign to speed reviews of energy projects, recently signed a memo directing the Army to expedite approvals for the project.
"While we look forward to the safe completion of the pipeline, we will continue to work collaboratively with all parties to vacate and clean up the main protest camp to avoid an ecological disaster and to honor the Standing Rock Sioux Tribe's wishes for protesters to leave the area".
The EIS was ordered by Jo-Ellen Darcy, the assistant secretary of the U.S. Army, on December 4.
But Hasselman added: "I'd say it's a near certainty that they go ahead. The Army will make any decisions once a full review and analysis is completed in accordance with the Presidential Memorandum". The pipeline has been the target of months of protests.
Members of the tribe have argued that the 1,172-mile pipeline would damage the water supply and desecrate land the tribe considers sacred.