The administration is considering a request from 12 federally recognized tribes to cancel the 78-year-old Line 5 oil pipeline, the Daily Mail reported. The pipeline is owned by a Canadian company named Enbridge.

Enbridge is already fighting multiple state and federal court battles to keep the pipeline open. According to Detroit News, Gov. Gretchen Whitmer (D) has already "revoked and terminated Enbridge's easement with the state last fall and ordered a Line 5 shutdown by the spring, which the company is resisting."

The tribes sent a letter to the Biden-Harris administration Friday to request their "help" in terminating an "existential threat to our treaty-protected rights, resources, and fundamental way of life."

The tribes also called on President Biden to honor his campaign promise to "protect… fundamental interests."

They argue the oil pipeline infringes on the 1836 Treaty of Washington, "which ceded Ojibwe and Odawa lands in Michigan in exchange for fishing, hunting and gathering rights on the treaty territory." But Jason Hayes, director of environmental policy at the Mackinac Center for Public Policy, believes canceling the pipeline would violate an agreement with Canada that allows the pipeline to flow between the two North American countries.