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Tribal Nations Sue Over Enbridge Line 5 Tunnel
11 Sep
Summary
- Tribal nations and environmental groups challenge Line 5 tunnel permits.
- Concerns focus on environmental damage and destruction of cultural resources.
- Legal challenges aim to overturn state approval for the tunnel project.

Legal challenges are mounting against Enbridge's Line 5 pipeline tunnel project in Michigan. Four Tribal Nations, including the Bay Mills Indian Community and Sault Ste. Marie Tribe of Chippewa Indians, alongside several environmental organizations, have requested a contested case hearing regarding permits issued by the Michigan Department of Environment, Great Lakes and Energy (EGLE).
These challenges specifically target the permits that would enable the construction of a tunnel beneath the Straits of Mackinac to house a replacement segment of the Line 5 pipeline. Opponents fear the project will cause irreversible environmental harm and destroy vital Indigenous cultural resources, including burial sites and sacred spaces.
The legal actions stem from a recent Michigan Supreme Court ruling that found state energy regulators failed to adequately consider the environmental impacts of extending the pipeline's lifespan when approving a prior permit. Governor Gretchen Whitmer's administration is now re-evaluating the permits amidst these ongoing concerns.