In the case of The Amiable Isabella, Munos, Claimant (1821), the Supreme Court was asked to decide whether a slave who had been emancipated by her master could sue for damages in a court of law. The claimant argued that she should be allowed to bring suit because she had been freed from slavery and thus was no longer bound by any legal restrictions on her rights as an individual. However, the defendant argued that since slaves were considered property under common law at the time, they did not have standing to sue in court. After considering both sides' arguments, the Supreme Court ruled in favor of Munos and held that former slaves could indeed bring suits against their former masters for damages caused while enslaved. This ruling established an important precedent which has helped shape our modern understanding of civil rights and protections afforded to all individuals regardless of race or status.

In The Amiable Isabella, Munos, Claimant (1821), the Supreme Court was asked to decide whether a Spanish grant of land in Florida could be recognized as valid. Justice Johnson wrote a dissenting opinion arguing that the court should not recognize this grant because it had been made by Spain after ceding its claim to the United States and therefore violated international law. He argued that if such grants were allowed, then any foreign power could make similar claims on U.S. territory without consequence or recognition from American courts. Furthermore, he noted that recognizing these grants would create confusion over who held title to lands in Florida and undermine Congress's authority over territorial matters since they had already passed legislation regarding land titles in Florida prior to this case being heard before the Supreme Court. Ultimately, Justice Johnson concluded that while there may have been some injustice done against Isabella Munos due to her reliance on an invalid grant of land from Spain, it was necessary for public policy reasons for the court not to recognize such grants so as not disrupt existing laws governing property rights within U.S territories like Florida at the time