United States v. Stafford was a United States Supreme Court case that dealt with the issue of whether a defendant could be convicted of a crime if the evidence presented was obtained through an illegal search and seizure. The case involved a man named Stafford who was accused of stealing a horse. The police searched Stafford's home without a warrant and found the stolen horse. Stafford was then arrested and charged with the crime. The Supreme Court ruled that the evidence obtained through the illegal search and seizure was inadmissible in court and that Stafford could not be convicted of the crime. The Court held that the Fourth Amendment of the United States Constitution protects citizens from unreasonable searches and seizures and that any evidence obtained through an illegal search and seizure is inadmissible in court. This ruling established the precedent that evidence obtained through an illegal search and seizure is inadmissible in court and cannot be used to convict a defendant.

In United States v. Stafford, the Supreme Court was asked to determine whether a federal court had jurisdiction over an action brought by the United States against a defendant for failing to pay taxes on distilled spirits. The majority opinion held that it did not have such jurisdiction because Congress had not given any authority for such actions in this particular case. However, Justice Field dissented from this decision and argued that Congress has always been able to grant federal courts with exclusive original jurisdiction over certain cases involving revenue laws of the United States. He further stated that even if there were no express statutory provision granting such power, then it would be implied as necessary in order for those laws to be enforced effectively and uniformly throughout the country. Thus, he concluded that since Congress had enacted numerous statutes related to taxation which gave rise to civil suits between citizens of different states or between citizens and foreign governments or corporations, then they must also have intended these same powers when enacting legislation concerning internal revenue matters like distilled spirits taxes here at issue in this case.