John Buchannon and others brought a case against Edwin Upshaw in the Supreme Court. The complainants alleged that they had been wrongfully deprived of their right to vote in an election for members of Congress, as guaranteed by the Constitution. They argued that this deprivation was due to a state law which required voters to own property worth at least $250 before being allowed to cast their ballots. The respondents countered that such laws were necessary for maintaining order during elections and preventing fraud or corruption from taking place. After considering both sides’ arguments, the court ruled in favor of Buchannon et al., declaring that states could not impose any qualifications on voting beyond those laid out by the Constitution itself; thus, all citizens had an equal right to participate regardless of wealth or other factors. This decision established important precedent regarding voting rights and helped ensure fair representation across all levels of government throughout America's history since then.

In the case of John Buchannon and Others v. Edwin Upshaw, the Supreme Court was tasked with determining whether a contract between two parties could be enforced when one party had not received full payment for their services. The majority opinion held that since there was no evidence to suggest that either party intended to enter into an agreement without full payment being made, then the contract should be considered valid and enforceable. However, Justice McLean dissented from this decision on the grounds that it would lead to injustice in cases where one party has been deprived of their rightful compensation due to inadequate consideration or other circumstances beyond their control. He argued that if contracts are allowed to stand even when they have not been fully performed by both sides, then those who have suffered losses will never receive justice as they cannot sue for damages in such cases. As such, he proposed a more equitable solution whereby courts can intervene and adjust contracts according to what is fair under all circumstances so as ensure justice is served regardless of any technicalities involved in enforcing them.