Davis v. Bilsland was a United States Supreme Court case that addressed the issue of whether a state court could enforce a contract that was made in another state. The case involved a contract between two parties, Davis and Bilsland, in which Davis agreed to pay Bilsland a certain amount of money for the sale of a piece of property. Bilsland sued Davis in a state court in Illinois, where the contract was made, and Davis argued that the court did not have jurisdiction to enforce the contract because it was made in another state. The Supreme Court held that the state court did have jurisdiction to enforce the contract. The Court reasoned that the contract was valid and enforceable in the state where it was made, and that the state court had the power to enforce it. The Court also noted that the contract was not contrary to the public policy of the state in which it was made, and that the state court had the power to enforce it. The Court's decision in Davis v. Bilsland established that a state court can enforce a contract that was made in another state, provided that the contract is valid and enforceable in the state where it was made and that it is not contrary to the public policy of the state in which it was made. This decision has been cited in numerous cases since then, and it has been used to support the enforcement of contracts in other states.

In Davis v. Bilsland, the Supreme Court was tasked with deciding whether a state court had jurisdiction to hear and decide a case involving an alleged breach of contract between two citizens of different states. The majority opinion held that the state court did not have jurisdiction in this matter because it involved interstate commerce, which is regulated by Congress under the Constitution's Commerce Clause. Justice Field dissented from this decision and argued that while Congress has exclusive power over interstate commerce, there are certain matters relating to contracts between individuals which do not fall within its purview. He further argued that such matters should be left for resolution by individual states' courts as they are best suited to determine local laws governing these types of disputes. In conclusion, Justice Field believed that since no federal law prohibited or interfered with the enforcement of contracts between citizens residing in different states, then it was up to each respective state's courts to resolve any issues arising out of those agreements according to their own laws and regulations.