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BISMARCK — A former presidential candidate has joined the fight against the Dakota Access Pipeline.

Sen. Bernie Sanders, I-Vt., proposed an amendment Thursday to the Water Resources Development Act to prevent the secretary of the Army from granting an easement for the Lake Oahe crossing for the crude oil pipeline until the completion of an environmental impact statement. The Senate is scheduled to resume consideration of the bill Monday afternoon, according to its floor schedule.

The beginning of the crossing is at the edge of Lake Oahe, east of the North Dakota Highway 1806, Sanders spokesman Josh Miller-Lewis said in an email.

A day after Sanders proposed his amendment and soon after a federal judge denied the Standing Rock Sioux Tribe’s request for a preliminary injunction Friday, federal agencies announced the Army would not authorize construction of the Dakota Access Pipeline on Army Corps of Engineers land bordering or under Lake Oahe until it can determine whether it will need to reconsider any of its previous decisions regarding the site.