The D.C. Circuit has recently limited the Department of Transportation's authority over pipeline regulations, reflecting a shift in the administrative landscape. This decision follows the appellate court's vacating of the Federal Energy Regulatory Commission's (FERC) approval of a $950 million natural gas pipeline project. The rulings signal a significant change in how corporate regulations may be navigated, particularly in the context of the recent Loper Bright decision, which has implications for the Chevron deference doctrine. Legal experts are observing these developments closely as they could reshape the regulatory environment for energy projects and corporate governance.