Mo. Rev. Stat. § 1.470
1. Any political subdivision or law enforcement agency that knowingly employs an individual acting or who previously acted as an official, agent, employee, or deputy of the government of the United States, or otherwise acted under the color of federal law within the borders of this state, who has knowingly, as defined under section 562.016, after the adoption of this section:
(2) Given material aid and support to the efforts of another who enforces or attempts to enforce any of the infringements identified in section 1.420;
shall be subject to a civil penalty of fifty thousand dollars per employee hired by the political subdivision or law enforcement agency. Any person residing in a jurisdiction who believes that an individual has taken action that would violate the provisions of this section shall have standing to pursue an action.
(L. 2021 H.B. 85 & 310)
Effective 6-12-21
(2023) The Second Amendment Preservation Act is unconstitutional in its entirety as a violation of the Supremacy Clause, Article VI of the United States Constitution. United States v. Missouri, 660 F.Supp.3d 791 (W.D. Mo.).