Diane Francis: Canada's biggest mistake was not building a cross-country oil pipeline â and the Line 5 standoff proves it Resurrect Energy East and the calamitous possibility of stopping the flow of more than 500,000 barrels a day would never happen again Author of the article: Diane Francis Publishing date: Mar 08, 2021  â¢Â March 8, 2021  â¢Â 3 minute read  â¢Â In November, Michigan ordered a key portion of the major pipeline carrying Canadian oil eastward â Enbridge's Line 5 pipeline â to be shut down by the end of May. The key portion consists of 7.2 kilometres of twin pipelines that cross under the Straits of Mackinac. Photo by File photo/Postmedia Network