In Thomas Jackson et al. v. William E. Ashton, the Supreme Court of the United States heard a case concerning a contract dispute between two parties over an agreement to purchase land in Kentucky and Ohio from 1825-1830. The appellants argued that they had fulfilled their obligations under the contract but were not able to receive payment due to financial difficulties on behalf of Ashton, who was responsible for paying them according to their agreement. The court ruled in favor of the appellants and held that although there may have been some delays or irregularities with payments made by Ashton, he still remained liable for any debt owed under his original contractual obligation with Jackson et al., as well as any damages resulting from nonpayment or breach of contract which occurred during this time period.

In Thomas Jackson et al. v. William E. Ashton, the Supreme Court was asked to decide whether a state court had jurisdiction over an action brought by citizens of one state against citizens of another in which the amount in controversy exceeded $500 and no diversity of citizenship existed between them. The majority opinion held that such actions could not be maintained in a state court because it would violate Article III, Section 2, Clause 1 of the United States Constitution which grants federal courts exclusive jurisdiction over cases involving parties from different states or foreign countries when more than $500 is at stake. However, Justice McLean dissented on this point arguing that Congress did not intend for all controversies between citizens of different states to be exclusively decided by federal courts as they are limited only to those matters where there is complete diversity among parties involved and/or where Congress has specifically granted concurrent jurisdiction with respect to certain types of cases like admiralty proceedings or patent disputes. He further argued that if Congress intended for all such controversies regardless their nature or size should go before federal courts then it would have been explicitly stated so within Article III itself instead leaving it up to interpretation through judicial precedent alone without any clear guidance from legislation passed by Congress itself