The Dakota Access Pipeline is once again in the national spotlight following the arrest of popular actress Shailene Woodley, star of the Divergent movie series and film "The Fault in Our Stars."
Woodley was arrested Monday for criminal trespassing after protesting the construction of the pipeline that is to run through North and South Dakota.
She streamed the protest and her arrest on Facebook Live.
While the arrest of Woodley has thrust the controversial pipeline back into the spotlight, the fight against it has been ongoing for months.
It began in July when the Standing Rock Sioux Tribe sued to block the pipeline through North Dakota, South Dakota, Iowa and Illinois.
Tribal leaders claim they were never meaningfully consulted before the construction began.
They want it to stop because of concerns about water supply and cultural artifacts, although a North Dakota archeologist says an inspection found none on the land.
In an online post to its website, the project developer Dakota Access, a subsidiary of Texas-based Energy Transfer Partners, said the $3.7 billion project will enable domestically produced crude oil from North Dakota to reach major refining markets in a more direct, cost-effective, safer and environmentally responsible manner.
In September a federal judge denied the tribe's request to halt construction of the pipeline.
The tribe appealed the decision, but on Sunday a federal appeals court ruling cleared the way for construction to resume on private land near Lake Oahe, though work on federal land is still held up.
The Army Corps, the Department of Justice and the Department of the Interior released a joint statement last month saying they would not allow work to proceed on federal land near or under the Missouri River, pending more environmental reviews.
Thousands of people have protested in support of the tribe, and 123 people have been arrested since mid-August, including Woodley and Green Party presidential candidate Jill Stein.