In Warren v. United States, the Supreme Court addressed whether a federal court could review a decision made by an administrative agency without first exhausting all available remedies within that agency. The case involved two farmers who had been denied loans from the Commodity Credit Corporation (CCC), an entity of the U.S Department of Agriculture. They sued in federal court alleging that CCC's denial was arbitrary and capricious, violating their rights to due process under the Fifth Amendment. The district court dismissed their suit for lack of jurisdiction because they hadn't exhausted all possible appeals within CCC before filing suit in federal court. On appeal, however, the Eighth Circuit reversed this dismissal arguing that exhaustion wasn't necessary since it would be futile given CCC's firm stance on its policy. Upon reaching Supreme Court, it held that judicial review is not precluded when there are no adequate administrative remedies left or where such remedies would be futile to pursue further. It thus affirmed Eighth Circuit’s judgment allowing farmers' lawsuit against CCC to proceed despite them not having fully exhausted internal appeals at CCC.

In the dissenting opinion for Warren v. United States, Justice Jackson disagreed with the majority's decision to uphold a conviction based on evidence obtained through an illegal search and seizure. He argued that this ruling undermined Fourth Amendment protections against unreasonable searches and seizures by law enforcement officials. According to Justice Jackson, allowing such evidence in court would incentivize police misconduct by rewarding officers who violate citizens' constitutional rights with successful prosecutions. Furthermore, he contended that excluding illegally obtained evidence from trials does not prevent prosecutors from securing convictions using legally acquired proof of guilt; rather it ensures fairness in legal proceedings while upholding fundamental civil liberties enshrined in the Constitution.