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This June 29, 2018 photo shows tanks at the Enbridge Energy terminal in Superior, Wis. For the second time in a year, the federal government is invoking a little-known 1977 energy treaty between Canada and the United States to defend the Line 5 pipeline. This time, it’s in Wisconsin, where Line 5 skirts the southwestern shores of Lake Superior before crossing into Michigan. THE CANADIAN PRESS/AP-Jim Mone

In the news: Canadian pipelines, old and new, are in the spotlight again

By Canadian Press Mar 26, 2026 | 2:15 AM