Enbridge said Tuesday it would defy Michigan's demand to shut down an oil pipeline that runs through a channel linking two of the Great Lakes.

Alberta Premier Jason Kenney and Enbridge said an attempt by Michigan Governor Gretchen Whitmer to shut down Line 5 would have devastating consequences.

The Calgary-based company shut down both legs of the pipeline in June after noticing a disturbance to an underwater anchor supporting the eastern line.

The U.S. Army Corps of Engineers says it's preparing to decide whether to let Alberta-based Enbridge install supports for its underwater oil pipeline in Michigan's Straits of Mackinac.

The Calgary-based company said the opening between the pipe and the bottom of the Straits of Mackinac poses "no safety or integrity risk,'' an assessment that state regulators said they couldn't immediately confirm.

 A Native American tribe in Wisconsin is suing Enbridge Inc in a bid to shut down an aging oil pipeline that runs across its tribal land, the latest in a string of challenges against the Canadian company's pipelines in the U.S. Midwest.

Enbridge insists the Line 5 dual pipes, which have been in place since 1953, are in sound condition and could operate indefinitely.

Police are investigating after a collision in Oro Medonte left one person dead.

Police found a van on its side wedged on top of an eight-foot-high pile of rocks used for road construction.