Mo. Rev. Stat. § 454.1521
Initiating and responding tribunal of state.
454.1521. Initiating and responding tribunal of state. — Under sections 454.1500 to 454.1728 , a tribunal of this state may serve as an initiating tribunal to forward proceedings to a tribunal of another state and as a responding tribunal for proceedings initiated in another state or a foreign country.
(L. 2011 H.B. 260) Effective 6-15-16, see § 454.1728