The Army Corps of Engineers on Tuesday announced an accelerated review of a Michigan pipeline tunnel under the Straits of Mackinac following President Donald Trump’s declaration of a “national energy emergency” on day one of his second term.
Enbridge’s Line 5 oil pipeline is among 600 projects to receive an emergency designation following Trump’s January executive order declaring a national energy emergency and expediting reviews of pending energy projects. The action instructed the Army Corps to use emergency authority under the Clean Water Act to speed up pipeline construction.
“An energy supply situation which would result in an unacceptable hazard to life, a significant loss of property, or an immediate, unforeseen, and significant economic hardship,” if not acted upon quickly, the public notice reads.
U.S. President Donald Trump holds up a signed executive order as (L-R) U.S. Treasury Secretary Scott Bessent, Secretary of Commerce Howard Lutnick and Interior Secretary Doug Burgum look on in the Oval Office of the White House on April 09, 2025 in Washington, DC. (Photo by Anna Moneymaker/Getty Images)
“Line 5 is critical energy infrastructure,” Calgary-based Enbridge wrote to the DCNF. The company noted that it submitted its permit applications to state and federal regulators five years ago and described the project as “designed to make a safe pipeline safer while also ensuring the continued safe, secure, and affordable delivery of essential energy to the Great Lakes region.”
Army Corps’ Detroit District did not respond to the DCNF’s request for a copy of the notice or for comment.
The pipeline has been active since 1953 and extends for 645 miles across the state of Michigan, according to the Department of Environment, Great Lakes, and Energy website. Line 5 supplies 65% of the propane needs in Michigan’s Upper Peninsula and 55% of the state’s overall propane demand, according to Enbridge.
The project has faced legal trouble and permitting delays that have hindered its expansion. Michigan Democratic Gov. Gretchen Whitmer in 2019 used a legal opinion by Attorney General Dana Nessel to argue that the law that created the authority to approve the project “because its provisions go beyond the scope of what was disclosed in its title.”
The State of Michigan greenlit the project in 2021 and the Michigan Public Service Commission approved placing the new pipeline segment in 2023.
Trump has championed an American energy production revival, stating throughout his 2024 campaign that he wanted to “drill, baby, drill,” in reference to oil drilling on U.S. soil.
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