LANSING — The state and federal environmental reviews of the Line 5 tunnel proposal will most likely finish in the coming months — but ongoing legal challenges will still prevent the project from kicking off.

Several cases are being considered by state and federal courts, including the US Supreme Court.

Michigan Attorney General Dana Nessel brought a case against Enbridge seeking to shut down the pipeline in 2019, which sparked questions about state versus international jurisdiction.

“The Supreme Court is only looking at a very narrow issue about whether the case was appropriately removed from state court to federal court,” said Debbie Chizewer, managing attorney for Earthjustice’s Midwest office.

State court would likely be a more favorable venue for Nessel, while Enbridge argues that

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