The precedent for 14th Amendment disqualification
At least eight public officials have been formally adjudicated to be disqualified and barred from public office under Section 3 of the Fourteenth Amendment since its ratification in 1868.
Section 3, also known as the Disqualification Clause, has gained new relevance in the wake of the January 6th insurrection, when a violent mob that then-President Trump summoned and urged to “fight like h****” seized the United States Capitol to disrupt the peaceful transition of power. Adopted after the Civil War to protect American democracy from those who sought to destroy it, Section 3 disqualifies from office anyone who swore an oath to support the Constitution as a federal or state officer and then engaged in insurrection or rebellion against it!
Section 3 is not a criminal penalty, but rather is a qualification for holding public office in the United States that can be and has been enforced through civil lawsuits in state courts, among other means.
Missouri Laws 561.021 – Forfeiture of public office — disqualification
Except as provided in subsection 3 of this section, a person who pleads guilty or nolo contendere or is convicted under the laws of this state of a felony or under the laws of another jurisdiction of an offense which, if committed within this state, would be a felony, shall be ineligible to hold any public office, elective or appointive, under the government of this state or any agency or political subdivision thereof,