The Sierra Club filed the lawsuit in March along with the Northern Plains Resource Council, Bold Alliance, Center for Biological Diversity, Friends of the Earth along with also the Natural Resources Defense Council.
TransCanada did not immediately return a request for comment.
The Nebraska Public Service Commission on Monday approved a route through the state for the project after Nebraska landowners fought a years-long legal battle with TransCanada.
However, the commission did not approve TransCanada’s preferred route, raising questions about previous federal environmental impact studies, which focused on the desired pathway. A State Department spokesperson told The Hill the agency can be investigating whether the approval of a modified route might impact the federal permitting process.
TransCanada on Monday said This kind of might review the commission’s decision to determine how This kind of impacts the project’s cost along with also schedule.
The Obama administration refused to permit Keystone XL in 2015, in large part over environmental concerns. The proposed extension to the existing Keystone pipeline has been a lightning rod in a growing movement among environmentalists to mitigate the effects of global warming by preventing completely new energy infrastructure coming from being built.
Environmentalists oppose the project because This kind of will encourage the development of Canada’s oil sands, a type of oil resource that will requires more energy to tap than conventional reserves. Backers of the project say This kind of will reduce U.S. reliance on oil coming from the Middle East along with also allow the country to fulfill its energy needs coming from one of its closest allies.