“As a result of the enactment [of the law], the harness horsemen who have historically participated in live harness racing at Pompano Park are being treated differently and in a far less financially favorable manner than the similarly situated horsemen who participate in thoroughbred racing at the facilities of Florida’s thoroughbred permit holders,” the lawsuit said. “It is FSBOA’s [the Florida Standardbred Breeders & Owners Association’s] contention that no valid reason exists for this difference in treatment among horsemen performing similar, if not identical, horse racing activities.”