Missouri Constitution of 1945 Art. I, § 34. English to be the official language in this state

That English shall be the language of all official proceedings in this state. Official proceedings shall be limited to any meeting of a public governmental body at which any public business is discussed, decided, or public policy formulated, whether such meeting is conducted in person or by means of communication equipment, including, but not limited to, conference call, video conference, Internet chat, or Internet message board. The term “official proceeding” shall not include an informal gathering of members of a public governmental body for ministerial or social purposes, but the term shall include a public vote of all or a majority of the members of a public governmental body, by electronic communication or any other means, conducted in lieu of holding an official proceeding with the members of the public governmental body gathered at one location in order to conduct public business.