A federal judge has allowed 13 more Republican-led states to intervene as co-defendants in the Standing Rock Sioux Tribe’s new lawsuit against the U.S. Army Corps of Engineers.

The Standing Rock Sioux Tribe argues that consequences would be severe if the 30-inch pipeline carrying 450,000 barrels of oil per day were to leak near the reservation’s water intake valves.

Recently released audio from a 2014 meeting between the Standing Rock Sioux and Dakota Access Pipeline executives contradict the company’s statements that it knew nothing of the tribe’s ...

The Standing Rock Sioux Tribe has opposed the pipeline's Missouri River crossing over fears an oil spill would contaminate its water supply. By Jack Dura, Associated Press. Economy May 21.