The company that operates an Upper Midwestern oil pipeline is rejecting Michigan Gov. Gretchen Whitmer's demand to close it.
Whitmer had set a Wednesday deadline to shut down Line 5, contending it risks a major oil spill in the Straits of Mackinac linking Lake Huron and Lake Michigan.
Enbridge says only the federal government has authority to order a shutdown.
The Canadian company and its supporters say doing so would risk the same fuel disruptions experienced on the East Coast following a cyberattack against a pipeline there.
Opponents say the two situations are different and accuse Enbridge of flouting the law.
