LANSING, Michigan, April 13 -- Earthjustice issued the following news release on April 12, 2024: Yesterday, four Tribal Nations filed a brief (https://earthjustice.org/document/line-5-tunnel-challenge-tribal-brief) asking the Michigan Court of Appeals to overturn the Michigan Public Service Commission's (MPSC's) recent approval for Canadian oil giant Enbridge to build the Line 5 tunnel project beneath the Straits of Mackinac. The tunnel project would extend the operational life of the pipeline,  more