Mo. Rev. Stat. § 540.331
The circuit judge exercising criminal jurisdiction shall give the lists prepared in accordance with section 137.155 or 137.360, in charge of the grand jury, who shall have the authority to examine such list of property with a view of inquiring into the correctness of such list. No such list shall be altered, changed or amended after it is filed with the county clerk, except by order of the county commission. Any person who alters, changes or amends any such list without such order shall upon conviction be deemed guilty of a class A misdemeanor. Every county clerk or deputy county clerk who shall knowingly permit any such list to be altered, changed or amended without such order shall forfeit one hundred dollars, to be recovered by suit upon his official bond.
§ 540.331, RSMo