In the case of Chase v. United States in 1894, the Supreme Court ruled on a dispute involving land ownership and rights under Spanish law. The plaintiff, Chase, claimed that he had purchased a parcel of land from an individual who had received it as part of a Spanish grant before Florida became part of the U.S., thus making him its rightful owner. However, this claim was disputed by the government which argued that no such grant existed or if it did exist then it wasn't valid because Spain didn't have authority to make grants after ceding Florida to Britain in 1763. After examining historical records and treaties between Spain and other nations regarding territorial changes in Florida during relevant periods, including Treaty of Paris (1783) and Adams-Onis Treaty (1819), the court concluded that Spain indeed retained control over ungranted lands until they were formally transferred to U.S., hence could legally issue grants during interim period. Therefore, any grant made by Spain would be recognized under American law unless proven fraudulent or invalid for some other reason - burden lying with party challenging validity i.e., government here; not with party asserting right based on such grant i.e., Chase here.

In the dissenting opinion for Chase v. United States, Justice Brewer argued that the government did not have a right to recover money paid out in good faith under an honest mistake of law. He believed that there was no fraud or deceit involved and thus, it would be unjust to demand repayment from individuals who had acted in good faith based on their understanding of the law at that time. Furthermore, he pointed out inconsistencies between this case and previous rulings where similar principles were applied differently. In his view, these inconsistencies undermined legal certainty and fairness as they suggested different rules could apply arbitrarily depending on circumstances rather than being consistently guided by principle.