Mo. Rev. Stat. § 252.060: License may be inspected — penalty for refusal.

It is hereby declared to be the duty of every person holding a license or permit issued pursuant to any such rules and regulations to submit the same for inspection by any agent of the commission, or by any sheriff, marshal or constable or any deputy thereof. Any person holding such license or permit and refusing to submit the same when a proper demand is made therefor shall be deemed guilty of a misdemeanor.