Mississippi Code Title 45. Public Safety and Good Order § 45-9-83

(a) The State of Mississippi, including an agency, department, commission, bureau, board, office, council, court or other entity that is in any branch of state government and which is created by the constitution or a statute of this state;

(b) The governing body of a municipality, county, school district or other district;

(c) An officer, employee or body that is part of a municipality, county, school district or other district, including a sheriff, municipal police department, municipal attorney or county attorney; and

(d) A district attorney or other prosecuting attorney.

(2)(a) An entity described in subsection (1) of this section may not adopt a rule, regulation, order, ordinance or policy under which the entity enforces, or by consistent action allows the enforcement of, a federal statute, order, rule or regulation that purports to regulate a firearm suppressor, as defined in Section 45-9-81, if the rule, regulation, order, ordinance or policy imposes a prohibition, restriction or other regulation that does not exist under the laws of this state.

(b) An entity or person employed by or otherwise under the direction or control of an entity described in subsection (1) of this section may not enforce or attempt to enforce any federal statute, order, rule or regulation described under paragraph (a) of this subsection.

(3)(a) An entity described in subsection (1) of this section may not receive state funds if the entity adopts a rule, regulation, order, ordinance or policy under which the entity enforces a federal law described under subsection (2)(a) of this section or, by consistent action, allows the enforcement of a federal law described under subsection (2)(a) of this section.

(b) State funds for the entity must be denied for the fiscal year following the year in which a final judicial determination in an action brought under this section is made that the entity has violated subsection (2)(a) of this section.