If the SCOTUS votes to keep TFG on the ballot,

[FBaggins]

27. It actually does

If an amendment was added saying that murderers could not serve as presidents. It would not give some state court the power to determine whether or not a candidate was a murdered absent conviction for that crime.

14A does say that Congress has the power to enact legislation enforcing the amendment. Congress had already created the federal crime of insurrection... so clearly anyone convicted of that crime is already ineligible. They later enacted additional legislation that was later repealed... but at no time did Congress give a state court the ability to hold someone accountable for insurrection absent a conviction for same.