S.C. Code Ann. § 40-41-80

Every magistrate and constable and the sheriff and all of his regular deputies shall, and every citizen may, demand and inspect the license of any hawker or peddler in his county who shall come under the notice of any of such persons, and any such officer shall, or such citizen may, arrest or cause to be arrested any hawker or peddler found without a good and valid license and bring such hawker or peddler before the nearest magistrate to be dealt with according to law.