In Hughes v. Blake, the Supreme Court of the United States ruled that a state court's decision to grant an injunction against a debtor was not binding on creditors in other states. The case involved two individuals: John Hughes and William Blake. Hughes had obtained an injunction from a Virginia court preventing Blake from collecting debts owed by him to various creditors located outside of Virginia. The Supreme Court held that such injunctions were only effective within the jurisdiction where they were issued, and could not be enforced elsewhere without violating principles of comity between different states. This ruling established important precedent for how courts should handle cases involving debtors who are subject to multiple jurisdictions across different states or countries.

In Hughes v. Blake, the Supreme Court was asked to decide whether a state court had jurisdiction over a case involving citizens of different states. The majority opinion held that it did not have such jurisdiction and dismissed the appeal. However, Justice Johnson dissented from this decision on two grounds: firstly, he argued that Congress had given state courts concurrent jurisdiction in cases between citizens of different states; secondly, he contended that even if Congress had not done so explicitly, they could still exercise such power under their implied powers as granted by the Constitution. He further stated that since there were no federal laws or regulations specifically prohibiting state courts from exercising this type of authority then they should be allowed to do so in order to ensure justice for all parties involved in interstate disputes. In conclusion, Justice Johnson believed that allowing state courts to hear these types of cases would promote fairness and prevent injustice due to conflicting interpretations among various jurisdictions regarding matters concerning out-of-state litigants.