Mo. Rev. Stat. § 71.675

71.675. No class action suits permitted for enforcement or collection of business license taxes imposed on telecommunications companies. — 1. Notwithstanding any other provision of law to the contrary, no city or town shall bring any action in federal or state court in this state as a representative member of a class to enforce or collect any business license tax imposed on a telecommunications company. A city or town may, individually or as a single plaintiff in a multiple-plaintiff lawsuit, bring an action in federal or state court in this state to enforce or collect any business license tax imposed on a telecommunications company.

2. Nothing in this section shall be construed to preclude any taxpayer from initiating an action in federal or state court as a representative member of a class seeking injunctive relief against the Missouri department of revenue to enforce the imposition, assessment, or collection of the business license tax provided under sections 92.074 to 92.095 .

(L. 2005 H.B. 209) (2012) Section's bar on cities and towns serving as class representatives in suits to enforce or collect business license taxes on telecommunications companies violates article V, section 5 requirement that amending a procedural rule of the Supreme Court can only be done in a law limited to that purpose. State v. Jamison, 357 S.W.3d 589 (Mo.banc).