Beale v. Thompson and Maris was a case heard by the United States Supreme Court in 1814. The dispute arose when William Beale, an administrator of his deceased father's estate, sued Thomas Thompson and John Maris for failing to pay debts owed to the estate. Beale argued that he had been denied justice in Pennsylvania state court due to bias against him as a non-resident of the state. The Supreme Court agreed with Beale, ruling that it was unconstitutional for states to deny non-residents access to their courts based on residency status alone. This decision established precedent which has since been used in cases involving discrimination against out-of-state citizens seeking legal redress from state governments or officials within those states.

In Beale v. Thompson and Maris, the Supreme Court held that a state court had no jurisdiction to issue an injunction against a federal officer in order to prevent him from executing his duties under federal law. The dissenting opinion argued that the Constitution does not explicitly grant Congress exclusive authority over all matters relating to foreign affairs or commerce with foreign nations, and thus it is within the power of states to pass laws regulating such matters as long as they do not conflict with any existing federal legislation. Furthermore, since there was no evidence presented at trial showing that the injunction issued by the state court would interfere with any valid exercise of congressional power, it should have been allowed to stand. The dissent concluded by noting that if Congress wished for its powers in this area to be exclusive then it should make such intent clear through appropriate legislation rather than relying on judicial interpretation alone.