MO SB1225

Creates the "Restoring State Sovereignty Through Nullification Act" allowing Missouri to declare federal laws, executive orders, agency rules, court decisions, and treaties null and void if deemed unconstitutional

Defines "unconstitutional federal action" as any federal action enacted without authority specifically delegated to the federal government through the U.S. Constitution

Requires the General Assembly to evaluate federal actions using originalist interpretation, including ratifying debates, Constitutional Convention participants' understanding, first Congress interpretations, and first Chief Justice opinions

Prohibits state and local officeholders, agencies, and employees from assisting in enforcement of nullified federal actions, and bars use of state or local funds for such enforcement

Allows nullification through legislative bills (limited to one vote per federal action per year) or through state court holdings, with the General Assembly authorized to prescribe crimes and penalties for violations