Missouri constitution
Article III: legislative department
Section 30

No bill shall become a law until it is signed by
the presiding officer of each house in open session, who first shall suspend all other
business, declare that the bill shall now be read and that if no objection be made he
will sign the same. If in either house any member shall object in writing to the signing
of a bill, the objection shall be noted in the journal and annexed to the bill to be
considered by the governor in connection therewith. When a bill has been signed, the
secretary, or the chief clerk, of the house in which the bill originated shall present the
bill in person to the governor on the same day on which it was signed and enter the
fact upon the journal.