United States v. Britton was a United States Supreme Court case that addressed the issue of whether a federal statute that prohibited the possession of firearms by felons was constitutional. The Court held that the statute was constitutional, and that Congress had the power to regulate the possession of firearms by felons. The case arose when the defendant, William Britton, was convicted of violating the federal statute that prohibited felons from possessing firearms. Britton argued that the statute was unconstitutional because it violated the Second Amendment right to bear arms. The Supreme Court rejected this argument, holding that the Second Amendment did not protect the right of felons to possess firearms. The Court reasoned that the Second Amendment was intended to protect the right of citizens to bear arms for self-defense, and that felons had forfeited their right to bear arms due to their criminal convictions. The Court also held that Congress had the power to regulate the possession of firearms by felons under the Commerce Clause of the Constitution. The Court reasoned that Congress had the power to regulate the possession of firearms in order to protect interstate commerce, as the possession of firearms by felons could lead to an increase in crime and violence, which would have a negative effect on interstate commerce. In conclusion, the Supreme Court held that the federal statute prohibiting the possession of firearms by felons was constitutional, and that Congress had the power to regulate the possession of firearms by felons under the Commerce Clause.

Justice Field delivered the dissenting opinion in United States v. Britton, arguing that Congress did not have the power to pass a law which would prevent individuals from owning firearms within certain areas of Indian reservations. He argued that such a law was an infringement on individual rights and liberties protected by the Second Amendment of the Constitution, as well as other provisions found in state constitutions. Furthermore, he argued that it was beyond Congress' authority to regulate private property without due process or just compensation for those affected by such laws. Justice Field concluded his dissent with a warning against allowing government interference with personal liberty and property rights without proper justification or legal basis; otherwise, these fundamental protections could be eroded over time if left unchecked.