Muller v. Dows was a United States Supreme Court case that addressed the issue of whether a state court had the authority to issue a writ of error to a federal court. The case involved a dispute between two parties, Muller and Dows, over a contract for the sale of land. Muller had sued Dows in a state court, and Dows had appealed the decision to a federal court. The federal court had affirmed the state court's decision, and Dows had then sought a writ of error from the state court. The Supreme Court held that the state court did not have the authority to issue a writ of error to a federal court. The Court reasoned that the state court was not a court of competent jurisdiction to review the decision of the federal court. The Court further noted that the state court was not a court of appeals, and thus did not have the authority to review the decision of the federal court. The Court's decision in Muller v. Dows established that state courts do not have the authority to issue a writ of error to a federal court. This decision has been cited in numerous subsequent cases, and has been used to support the principle that state courts do not have the authority to review the decisions of federal courts.

Justice Field delivered the dissenting opinion in Muller v. Dows, arguing that the majority had misconstrued the meaning of a contract between two parties and failed to consider relevant evidence presented by both sides. He argued that while it was true that one party had agreed to pay for goods received from another, they also agreed to receive payment at a later date after certain conditions were met. The majority's decision ignored this agreement and instead focused on only part of their arrangement, which Justice Field believed was an incorrect interpretation of what actually occurred between them. Furthermore, he noted that there were other facts not considered by the court which could have affected its outcome if taken into account; thus making it unfair for one side or the other depending on how those facts were interpreted. In conclusion, Justice Field felt strongly that due process should be followed when interpreting contracts so as not to favor either party over another without proper consideration given to all aspects involved in such agreements.