You are missing the point, obviously. If they were considered in open rebellion don't you think they'd be in jail right now? You're supposed to have a brain, use it.
You seem hung up on violence being the metric here, and I just don't see any justification for that. If half the states in the country decided to declare themselves not subject to the jurisdiction of the United States, do they have to actually resort to violence before the United States takes action? If that's your position, than any state can secede any time it wants, and nobody can stop them as long as they do it peacefully. Hell, I can declare my house an independent nation, and the United States has to simply agree as long as I don't resort to violence.
As far as I can see, these people are in open rebellion. Just because they haven't resorted to violence does not change the fact. They are
holding an alternate government and claiming sovereignty over territory that is sovereign United States territory. They are attempting to perform inherently governmental functions, including the convening of courts and summoning people under the jurisdiction of the United States to appear before said courts, as if the jurisdiction of the United States were nonexistent. If that does not meet the description of being
against the authority of the United States or the laws thereof, then what is?
The government has the power to suppress rebellions. It has the power to investigate suspected cases of rebellion. I'm not sure why you are demanding that violence has to happen before the government can even investigate.