After the election they were engineering a coup d'etat, aka the "insurance policy". They were using all the police powers of the FBI and the DOJ to achieve their ends. This is treason. The conspirators need to go to jail for a long time.
Bonus question: Why are they all still employed by the federal government?
At first I was like:
But then I was like:
Because the coup is not over, all of its forces have not been deployed yet, and the outcome is very much in doubt.
This has gone WAY beyond "going to jail", which implies that these activities can be suppressed by "the ordinary course of judicial proceedings, or by the powers vested in the Marshals by law".
This will either be ended by force or by a communist takeover of the Washington government.