Hanrick v. Patrick 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 mandamus to a federal court. The case arose when the plaintiff, Hanrick, sought to compel the defendant, Patrick, to issue a writ of mandamus to the federal court. The plaintiff argued that the state court had the authority to issue the writ, while the defendant argued that the state court did not have the authority to do so. The Supreme Court ultimately held that the state court did not have the authority to issue the writ of mandamus to the federal court. The Court reasoned that the state court lacked the power to issue a writ of mandamus to a federal court because the federal court was a court of exclusive jurisdiction. The Court further reasoned that the state court could not interfere with the federal court's exclusive jurisdiction. As such, the Court held that the state court did not have the authority to issue the writ of mandamus to the federal court.

Justice Field delivered the dissenting opinion in Hanrick v. Patrick, arguing that the majority's decision was contrary to established precedent and would lead to a dangerous expansion of federal power. He argued that Congress had no authority under the Constitution to pass laws regulating private contracts between individuals, as this was an issue traditionally left up to state legislatures. Furthermore, he noted that if Congress were allowed such expansive powers it could potentially interfere with any contract made by citizens within its jurisdiction - something which should be considered unconstitutional given our nation's commitment to individual liberty and freedom from government interference. Finally, Justice Field concluded his dissent by noting that while some may argue for a broad interpretation of Congressional power in order for them better serve their constituents' interests; such an approach would ultimately undermine both states' rights and personal liberties guaranteed by our Constitution.