Williams v. Kirtland was a United States Supreme Court case that dealt with the issue of whether a state court had the authority to issue a writ of habeas corpus to a prisoner held in a federal prison. The case arose when a prisoner, John Williams, was held in a federal prison in the District of Columbia. Williams sought a writ of habeas corpus from the Supreme Court of the District of Columbia, which was denied. Williams then appealed to the Supreme Court of the United States. The Supreme Court held that the state court did not have the authority to issue a writ of habeas corpus to a prisoner held in a federal prison. The Court reasoned that the power to issue writs of habeas corpus was a federal power, and that the state court did not have the authority to interfere with the federal government's power to imprison individuals. The Court also noted that the writ of habeas corpus was a fundamental right, and that the state court should not be allowed to interfere with the federal government's power to imprison individuals. The Court's decision in Williams v. Kirtland established that state courts do not have the authority to issue writs of habeas corpus to prisoners held in federal prisons. This decision has been cited in numerous subsequent cases, and has been used to support the idea that the federal government has the power to imprison individuals without interference from the states.

In Williams v. Kirtland, the Supreme Court was tasked with determining whether a contract between two parties could be enforced when it had been made without consideration and in violation of an existing law. The majority opinion held that the contract was unenforceable due to its lack of consideration and illegal nature. However, Justice Field dissented from this decision on the grounds that there were sufficient facts present which indicated that both parties intended for their agreement to be binding regardless of any legal issues or considerations involved. He argued that if such agreements are not upheld then individuals would have no incentive to enter into contracts since they cannot rely on them being enforced by courts even if all other conditions are met. Furthermore, he noted how upholding these types of agreements is beneficial for society as a whole since it encourages people to make deals with each other instead of resorting to more extreme measures like violence or fraud in order resolve disputes over property rights or obligations owed between them.