Mo. Rev. Stat. § 40.280

Any person subject to sections 40.005 to 40.490 who uses contemptuous words against the President of the United States, Vice President of the United States, Congress, Secretary of Defense, or a secretary of a department, the governor of the state of Missouri, the Missouri general assembly or the adjutant general of the state of Missouri, the governor or the legislature of any state, territory or other possession of the United States in which he is on duty or present shall be punished as a court-martial may direct.