A marker indicates the location of Enbridge's Line 5 pipeline in the Straits of Mackinac. (Great Lakes Now Episode 1024)

Carrying oil through the waters of the Straits of Mackinac, the Enbridge Line 5 pipeline is arguably the biggest international, political and environmental issue in the Great Lakes region. Now, with a state-ordered shutdown, rigorous company defenses, debates about acceptable risk, and local jobs at stake, the legal fight involves courts, state politics, and tribal, Canadian and U.S. governments.  

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