In Loper Bright Enterprises v. Raimondo, what long-standing legal precedent was overturned?

The correct answer is that Loper Bright Enterprises v. Raimondo overturned Chevron deference. Chevron deference is a legal doctrine that requires courts to defer to administrative agencies' interpretations of statutes they administer, as long as those interpretations are reasonable. In the case, the court challenged this longstanding principle by ruling that courts should no longer automatically defer to agency interpretations, thereby changing the landscape of administrative law.

This alteration reflects a broader skepticism about the ability of federal agencies to interpret statutes independently of judicial review, emphasizing the need for courts to have a more active role in evaluating agency actions. The decision signifies a significant shift in how courts approach cases involving agency regulations and interpretations, which can affect various regulations associated with agencies across multiple sectors.