Fresh nuts, bolts and fittings are ready to be added to the east leg of the pipeline near St. Ignace as Enbridge prepares to test the east and west sides of the Line 5 pipeline under the Straits of Mackinac in Mackinaw City, Mich., on June 8, 2017. Less than a month after U.S. President Joe Biden nixed the Keystone XL pipeline as part of a sweeping climate plan, another pipeline with implications for Canada is in the crosshairs of a U.S. politician. THE CANADIAN PRESS/AP, Detroit News - Dale G Young