In United States v. John Bailey, the Supreme Court was asked to decide whether a federal court had jurisdiction over a case involving an alleged violation of state law. The defendant, John Bailey, had been indicted by a grand jury in Georgia for violating the state's laws against selling liquor without a license. He argued that since he was being charged with breaking state law and not federal law, it should be tried in Georgia rather than in federal court. The Supreme Court disagreed and held that when Congress has given authority to punish certain offenses under both national and local laws, then those cases may be brought before either type of court depending on which is more convenient or appropriate for the particular situation at hand. This ruling established precedent allowing defendants to be prosecuted federally even if their actions were only violations of state laws.

In United States v. John Bailey, the Supreme Court was tasked with determining whether a federal court had jurisdiction to try an individual for treason against the state of Georgia. The majority opinion held that it did not have such authority and dismissed the case. In his dissenting opinion, Justice McLean argued that Congress has exclusive power over all cases of treason and therefore should be able to exercise its authority in this instance as well. He further noted that if a state could prosecute someone for treason against itself without any interference from Congress or other states, then each state would essentially become independent sovereigns which is contrary to our Constitution's intent of creating one unified nation under federal law. Additionally, he argued that allowing states to independently prosecute individuals accused of committing crimes against them would lead to unequal protection under the law since some states may choose not to punish certain offenses while others do so more harshly than necessary due solely on their own discretion rather than by uniform national standards set forth by Congress.