Dakota Pipeline protesters stand arm-in-arm at the intersection of Rosser Avenue and Fourth Street in downtown Bismarck, N.D., after marching from the state Capitol to the William L. Guy Federal Building, Monday, Nov. 14, 2016. (Mike McCleary/The Bismarck Tribune via AP)

Dakota Pipeline protesters stand arm-in-arm at the intersection of Rosser Avenue and Fourth Street in downtown Bismarck, N.D., after marching from the state Capitol to the William L. Guy Federal Building, Monday, Nov. 14, 2016. (Mike McCleary/The ... Bismarck Tribune via AP) (The Associated Press)

Robert Kennedy Jr. to join Dakota Access pipeline protests

Markets Associated Press

Robert F. Kennedy Jr. is slated to join protesters of the Dakota Access pipeline in North Dakota.

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Also Tuesday, demonstrators across the county are expected to converge on Army Corps of Engineers offices and offices of banks that are financing the pipeline project. The protesters want President Barack Obama to permanently halt the construction of the $3.8 billion pipeline.

Kennedy is an environmental attorney and president of the New York-based Waterkeeper Alliance, which seeks to protect watersheds worldwide.

The pipeline is to run beneath a Missouri River reservoir in North Dakota that provides drinking water to the Standing Rock Sioux tribe, which says the pipeline threatens drinking water and cultural sites.

The pipeline would deliver oil from North Dakota through South Dakota and Iowa to a shipping point in Illinois.