The decision in Swift resulted in inconsistent judicial rulings in the same state on the same legal issue depending on whether a plaintiff brought a case in state or federal court. In one case, for example, Black and White Taxicab Co. v. Brown and Yellow Taxicab Co. 276 U.S. 518 (1928), the Brown and Yellow Cab Company, a Kentucky corporation, sought to create a business association with the Louisville and Nashville Railroad, where Brown and Yellow would have a monopoly on soliciting passengers of the railroad, effectively eliminating the competition, the Black and White Cab Co. Such an agreement was illegal under Kentucky common law, as interpreted by Kentucky's highest court. Brown and Yellow dissolved itself, reincorporated in Tennessee, and executed the agreement there, where such an agreement was legal, bringing suit against Black and White in a Kentucky federal court to prevent them from soliciting passengers. The federal court upheld the agreement, citing Swift, and arguing that under general federal common law, the agreement was valid. If Brown and Yellow had brought suit in a Kentucky state court, the agreement would not have been upheld.
