Mississippi Constitution Art. 7, § 186

The Legislature shall pass laws to prevent abuses, unjust discrimination, and extortion in all charges of express, telephone, sleeping-car, telegraph, and railroad companies, and shall enact laws for the supervision of railroads, express, telephone, telegraph, sleeping-car companies, and other common carriers in this State, by commission or otherwise, and shall provide adequate penalties, to the extent, if necessary for that purpose, of forfeiture of their franchises.