Genuine Auto Parts v EPA: How to Challenge Agency Findings of Fact

This article discusses how to challenge decisions of fact made by administrative agencies, based on a recent federal appellate decision in which a decision by the Environmental Protection Agency was overturned. In Genuine Auto Parts v EPA, the court concluded that the agency's failure to address an important element of the matter made its decision "arbitrary and capricious" and "not supported by substantial evidence." The article discusses the relationship between "arbitrary and capricious" and "not supported by substantial evidence" as independent grounds for overturning an agency decision and concludes that both require a challenge to the decision-making process, not a challenge to the substance of the agency decision and the both require a rational process so that an agency failure to articulate a reason for its decision can be grounds for reversal.