Section 3 of the 14th Amendment ...
Would Not Exist in Libertarian Land
Adopted in the wake of the Civil War, Section 3’s intent was to prevent Civil War leaders from serving in high federal office. That goal was understandable but misguided.
Section 3 is anti-democratic. If voters wants an insurrectionist, they should get an insurrectionist. In some cases insurrectionists have good reasons for their actions (think the Revolutionary War). Relatedly, Section 3 punishes the losers from internal conflicts, which prevents reconciliation.
And if Section 3 keeps a popular candidate off the ballot, that will likely increase polarization and resentment amongst the candidate’s supporters, perhaps to the point of further, and worse, insurrection.