US President Donald Trump has signed executive orders clearing the way for the construction of two controversial oil pipelines to move forward.
Before taking office, Trump indicated support for completion of the Dakota Access pipeline and resumption of work on the Keystone XL project.
The most immediate concern would be green-lighting the $3.8 billion Dakota Access project, which was the focus of vigorous protests from Native American tribes and environmentalists last year.
Led by the Standing Rock Sioux, more than 100 Native American tribes have warned that the four-state pipeline would destroy their sacred sites and contaminate their water resources.
The 1,100-mile (1,770-km) pipeline would be the first to transport crude oil from Bakken shale, a vast oil formation in North Dakota, to refineries in the US Gulf Coast.
The US Army Corps of Engineers decided to halt the project late last year to explore other routes for the pipeline, and in January said…