In Snow v. United States, the Supreme Court of the United States was asked to decide whether a defendant could be convicted of a crime if the evidence presented at trial was obtained through an illegal search and seizure. The defendant, Snow, was charged with the possession of counterfeit money. The evidence used to convict him was obtained through a search of his home without a warrant. The Supreme Court held that the evidence obtained through the illegal search and seizure was inadmissible and that the defendant could not be convicted on the basis of it. The Court reasoned that the Fourth Amendment of the United States Constitution protects citizens from unreasonable searches and seizures and that the evidence obtained through the illegal search and seizure was in violation of this amendment. The Court also held that the exclusionary rule applied in this case, meaning that the evidence obtained through the illegal search and seizure was inadmissible in court. The Court reasoned that the exclusionary rule was necessary to deter law enforcement from conducting illegal searches and seizures in the future. In conclusion, the Supreme Court held that the evidence obtained through the illegal search and seizure was inadmissible and that the defendant could not be convicted on the basis of it. The Court also held that the exclusionary rule applied in this case, meaning that the evidence obtained through the illegal search and seizure was inadmissible in court.

In Snow v. United States, the Supreme Court was asked to decide whether a defendant could be convicted of two separate offenses for one act or transaction. The majority opinion held that it was permissible under certain circumstances, but Justice Field dissented from this ruling and argued that such convictions violated the Fifth Amendment's Double Jeopardy Clause. He reasoned that if an individual is charged with multiple crimes arising out of a single act or transaction, they should only face punishment once since punishing them twice would amount to double jeopardy in violation of their constitutional rights. Furthermore, he noted that allowing multiple punishments for one offense would lead to arbitrary prosecutions and encourage prosecutors to bring numerous charges against defendants even when there is no evidence supporting each charge individually. Ultimately, Justice Field concluded by asserting his belief that convicting someone on more than one count stemming from the same incident violates both due process and double jeopardy protections guaranteed by the Constitution.