In M. B. Haydel, Plaintiff in Error v Francois Girod, the Supreme Court of the United States heard a case involving an appeal from Louisiana state court concerning a contract dispute between two parties. The plaintiff argued that he was entitled to damages for breach of contract due to defendant’s failure to deliver goods as promised and requested specific performance instead of money damages. The lower court found against him on both counts and denied his motion for new trial or rehearing based on newly discovered evidence. On appeal, the Supreme Court affirmed this decision by ruling that since there was no fraud or mistake alleged in connection with the original judgment, it could not be set aside even if new evidence had been presented at trial which would have changed its outcome; thus denying plaintiff's request for relief from said judgment. This case serves as an important reminder that judgments rendered by courts are final unless they can be proven fraudulent or made under duress

In the case of M. B. Haydel v Francois Girod, the Supreme Court was asked to decide whether a Louisiana state court had jurisdiction over a dispute between two citizens of different states. The majority opinion held that it did not have such jurisdiction and reversed the decision of the lower court in favor of Haydel. Justice McLean dissented from this ruling, arguing that under Article III Section 2 Clause 1 of the Constitution, which grants federal courts original jurisdiction over cases involving citizens from different states, Louisiana's state courts also had concurrent jurisdiction with federal courts in such matters. He further argued that since Congress has never passed any law denying or limiting this power to state courts, they should be allowed to exercise their own judgment on these issues without interference from higher authorities like the Supreme Court unless there is clear evidence otherwise provided by Congress or other legal authority for doing so.