Missouri constitution
Article IV: executive department
Section 27

3. The governor shall notify the general assembly by proclamation when the governor reduces one or more items or portions of items of appropriation of money as a result of actual revenues being less than the revenue estimates upon which the appropriations were based. Each item or portions of items of appropriation of money shall stand reconsidered in the chamber in which the bill that contained the appropriation originated. Such reconsideration shall be in the manner that a bill is reconsidered under article III, section 32. Either the general assembly that receives the proclamation or the next general assembly may reconsider such reduction. Such reconsideration may be at any time the general assembly is in session including sessions pursuant to article III, sections 20, 20(b), and 32 and article IV, section 9.