Archambault was instrumental in protesting against the Dakota Access Pipeline and setting up resistance camps on land adjacent to the Standing Rock reservation. In August 2016, he was arrested, charged with
disorderly conduct and
strip searched when he crossed a "no trespassing" sign while protesting. In defense of tribal sovereignty, Archambault spoke with numerous journalists, providing information about the history of the movement and the history of treaty and indigenous rights. He criticized the militaristic-style police response to the protesters at Standing Rock. Writing in an editorial in
The New York Times he said: :"Perhaps only in North Dakota, where oil tycoons wine and dine elected officials, and where the governor, Jack Dalrymple, serves as an adviser to the Trump campaign, would state and county governments act as the armed enforcement for corporate interests. In recent weeks, the state has militarized my reservation, with road blocks and license-plate checks, low-flying aircraft and racial profiling of Indians. The local sheriff and the pipeline company have both called our protest "unlawful," and Gov. Dalrymple has declared a state of emergency." In February 2017, newly-elected President Donald Trump ended the environmental impact assessment and ordered construction to continue. The pipeline was completed in April. Saying, "Our fight isn’t over until there is permanent protection of our people and resources from the pipeline," Archambault said that he and the tribe will continue to protest and work for Native American rights issues. He disputes the claim that they are promoting "energy independence" and argues that true energy independence can only come through non-fossil fuel energy sources. Archambault believes that the pipeline protests have helped to awaken and empower young people, both locally and internationally. == Native American rights and economic development ==