In Croudson and Others v. Leonard, the Supreme Court was asked to decide whether a state court had jurisdiction over a case involving citizens of different states. The plaintiffs were citizens of Pennsylvania who sued the defendant, a citizen of Maryland, in an action for debt in Pennsylvania's courts. The defendant argued that since he was not domiciled in Pennsylvania and did not consent to be sued there, the state court lacked jurisdiction over him. However, the Supreme Court held that under Article III Section 2 Clause 1 of the Constitution (the "Diversity Clause"), federal district courts have exclusive original jurisdiction over cases between citizens from different states if they involve more than $500 or other specified matters such as admiralty claims or copyright infringement suits. Since this case involved only money damages and no special subject matter requiring federal court involvement, it could properly be heard by a state court with appropriate diversity jurisdiction even though neither party resided within its boundaries at time suit was brought against them.

In Croudson and Others v. Leonard, the Supreme Court was asked to decide whether a contract between two parties should be enforced when one of them had died before it could be completed. The majority opinion held that the contract should not be enforced because it would have been impossible for the deceased party to fulfill their obligations under it. However, Justice Chase dissented from this decision, arguing that contracts are binding on both parties regardless of death or other intervening events. He argued that if a court were to refuse enforcement in such cases then no person would ever enter into any agreement with another without first obtaining security against unforeseen circumstances like death or illness which might prevent either party from fulfilling their obligations under the contract. Furthermore, he argued that refusing enforcement in these cases would lead to injustice as creditors who had relied upon an agreement being fulfilled by someone now dead may suffer loss due to its non-enforcement while debtors who were liable for payment may benefit unjustly from its non-enforcement due solely to chance rather than merit or fault on their part.