The U.S. Supreme Court’s recent 8-0 ruling limited the scope of the National Environmental Policy Act (NEPA), the national environmental law that mandates federal agencies to assess the environmental effects of their proposed actions before making decisions. In the May 29, 2025, decision in Seven County Infrastructure Coalition v. Eagle County, Colorado, the Supreme Court found that substantial judicial deference should be afforded to agencies under NEPA, and that NEPA does not require agencies to consider the environmental effects of projects that are separate in time or place from the project at hand.

The case concerned construction of an 88-mile railroad line connecting Utah’s oil-rich Uinta Basin to the national freight rail network to facilitate the transportation of crude oil to ref

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