Look at the fencing and fortification around the Capitol Building, including the razor wire.
https://www.youtube.com/watch?v=k1ty9QvPhuk
It does not look like it is to keep people from getting in, although it would certainly be effective in that role. It looks like it is a detention center.
Imagine trying to prosecute several hundred criminals. If you do it one by one, it would take decades. Logical thinking.
Speculation:
All the criminals will be rounded up and detained in the detention center. They will all be seated in the House of Representatives (the "People's House"), which is the scene of many of their crimes.
They will all be prosecuted by military tribunal at the same time, broadcast around the world, live from the People's House.
Evidence will be presented. Witnesses will be called. Any defendants who want to testify will be allowed to do so, and they can present any evidence or witnesses they would like.
It will be an education on American government that the whole world will see, and that the American people must. It will be an education on things that were kept secret from the people of the world for so many years.
The Great Awakening.
While I would like to see this, I don't think all will be executed, only the really big fish.
After their tribunals they will be escorted to a helicopter and whisked away to sunny Gitmo for an all inclusive stay at the "spa" . . . indefintely.
I would love to see it.
BUT why did they expand GITMO? Why are there prison ships reportedly anchored off the coast?