Mo. Rev. Stat. § 530.010 : — STATUTORY ACTIONS AND TORTSProhibition — Writ issued for what purposes TEXT PDF The remedy afforded by the writ of prohibition shall be granted to prevent usurpation of judicial power, and in all cases where the same is now applicable according to the principles of law. § 530.010, RSMo RSMo 1939 § 1773 Prior revisions: 1929 § 1609; 1919 § 2057; 1909 § 2622