The Michigan Supreme Court has ordered state regulators to reconsider a permit for a tunnel carrying an oil pipeline under the Great Lakes.

Pipeline and Hazardous Materials Safety Administration, the Michigan attorney general's office and the state Department of Environment, Great Lakes and Energy. A state judge granted a request from Nessel to close the line June 25 after Enbridge reported the damage. The Enbridge report said the nature of the damage and drag marks in the lakebed pointed to a cable or anchor from a small or moderately sized vessel. Enbridge says it has stepped up security measures in the straits since a 6-ton (5.44-metric tonne) barge and tugboat anchor struck Line 5 in April 2018. They have focused primarily on avoiding contact with larger vessels but are being expanded to prevent encounters with smaller ones, Duffy said.

Gretchen Whitmer demanded Friday that Enbridge Energy provide proof that the damage to one of its dual oil pipelines under the Straits of Mackinac will not pose a threat to the area. Whitmer said the damage and how it occurred calls into question the viability of the pipeline. Thats why I am requesting Enbridge turn over to the State of Michigan all relevant information about this most recent damage and provide affirmative evidence that establishes the integrity of the pipeline, Whitmer said in a statement. The company paid $177 million and pledged to improve pipeline safety under that agreement. Mike Shriberg of the National Wildlife Federal and a former member of Michigans Pipeline Safety Advisory Board says the problems with Line 5 reported Thursday should result in its demise.