Mississippi Constitution Art. 14, § 266

No person holding or exercising the rights or powers of any office of honor or profit, either in his own right or as a deputy, or while otherwise acting for or in the name or by the authority of another, under any foreign government, or under the government of the United States, shall hold or exercise in any way the rights and powers of any office of honor or profit under the laws or authority of this State, except notaries, commissioners of deeds, and United States commissioners.