A proper response would have been to send in the national guard, corral all the insurrectionists and put them in a camp to await trial there.
Speedy justice, all with insurrection and murder/felony murder as the basis for their charges.
Then you figure out how to work through the backlog of prison sentences. Maybe use an island for that or something. Far away from mainland US like Guam.
There you provide food, housing, schooling and allow them a chance to become productive members of society after their sentence.