On Eve of Deadline, Canada Makes Case in Court to Keep Line 5 Pipeline Running

May 11, 2021 Updated: May 11, 2021

WASHINGTON—Ottawa is stepping up its fight with Michigan over the fate of the Line 5 pipeline.

The federal government filed court documents today to formally oppose Gov. Gretchen Whitmer’s effort to shut down the cross-border energy link.

Whitmer has given Calgary-based Enbridge Inc. until Wednesday to shut down Line 5—a demand the company says it has no plans to meet.

Whitmer says she fears an environmental catastrophe in the Straits of Mackinac, the waterway where Line 5 traverses the Great Lakes.

A court-ordered negotiation is underway, with the two sides scheduled to meet again May 18, several days after Whitmer’s self-imposed deadline.

Canada’s so-called amicus brief urges the court to avoid a unilateral shutdown and expresses support for a mediated solution to the dispute.