Hughes v. Oklahoma

Concerned about depleting its natural minnow population, Oklahoma (plaintiff, as prosecuting authority) passed a statute banning transport of minnows caught in-state for out-of-state sale; Hughes (defendant), operating a Texas-based minnow business, was charged under the statute for shipping Oklahoma minnows interstate. Hughes challenged the law as discriminating against interstate commerce; the lower courts upheld the statute, and Hughes appealed.