In the case of James Barry v. Hamilton R. Gamble, the Supreme Court was asked to decide whether a state court had jurisdiction over a dispute between citizens of different states that occurred in an area within the boundaries of Missouri but not yet organized as part of it. The plaintiff argued that since he and his opponent were both citizens from different states, this dispute should be heard by federal courts instead. The Supreme Court disagreed and held that even though Missouri did not have formal authority over this region at the time, its laws still applied there because it was within its borders and thus could exercise jurisdiction over disputes occurring there between two parties from different states. This decision established precedent for how similar cases would be handled in future instances where one or more parties are from out-of-state but their legal issue arises within another state's territory

In the case of James Barry v. Hamilton R. Gamble, the Supreme Court was asked to decide whether a state court had jurisdiction over a dispute between citizens from different states that involved land located in Missouri. The majority opinion held that the state court did have jurisdiction and affirmed its decision, but Justice McLean dissented on two grounds: first, he argued that under Article III of the Constitution, Congress has exclusive authority to determine when federal courts should exercise their original jurisdiction; second, he contended that even if Congress had not acted on this issue yet (which it hadn't), then by default only federal courts would have such power since they are established by national law rather than local laws like state courts are. He concluded his dissent with an argument for why allowing states to adjudicate disputes between citizens from other states could lead to dangerous consequences and undermine our system of dual sovereignty.