Last week, a federal judge decreed that the Army Corps of Engineers had done an insufficient job reviewing the environmental impact of the Dakota Access Pipeline (DAPL).
The decision threatens to shut down the pipeline. Pushing forward on the pipeline was one of the early accomplishments touted by President Donald Trump.
Under the National Environmental Protection Act (NEPA), agencies are required to conduct analyses of environmental impacts for a wide range of government decisions including ones like allowing DAPL.