Poole v. Fleeger, 36 U.S. (11 Pet.) 185 (1837), is a 7-to-0 ruling by the Supreme Court of the United States which held that the states of Kentucky and Tennessee had properly entered into an agreement establishing a mutual border between the two states. The plaintiffs in the case were granted title to property improperly conveyed by the state of Tennessee north of this border. In the ruling, the Supreme Court asserted the fundamental right of states and nations to establish their borders regardless of private contract, and made a fundamental statement about the rights of parties to object to a trial court ruling under the rules of civil procedure.