We are playing a movie, but I would suspect that many a criminal in the capital are unaware. When the "DC Prison" was set up, we assumed it would be THE trap for the DS and criminals at the capital, and yet. Nothing happened on the inauguration day. (Enter doomers and shills)
But we forget one vital detail about traps that are set to capture dangerous animals...
Those animals need to be acclimated to the trap's presence before it is sprung.
What if the Trap is still there, but in order for it to achieve maximum effect the quarry needs to be lulled into a false sense of security?
I believe that to be the case. After all, NCSWIC
Research videos on how Texas (prob. other states, too) hunt wild pigs. They set up a pen with an access gate and wait until their comfy. There is usually a guard pig; when she gives the OK, everybody(pig) gets well fed and "SNAP", the gate/exit is quickly shut, and then the "picking them off" begins, quick and clean.