Arresting and sending all of Congress to Gitmo will immediately collapse the stock market. It would be the biggest/fastest drop in history. Probably drop 95% overnight.
There would be mass riots and civil unrest like never seen before, power blackouts, food shortages, looting, etc.
If it happens, its going to look like Armageddon for a while so if you really believe he's going to arrest nearly the entire government be prepared and stock up on food/water.
Lol you know that's the argument half of Congress would make. You cant arrest us for treason it's bad for the GDP.
They do it already. "Can't declassify us being wretched treasonous crooks because it's not good for nAtIoNaL s3cuRiTy".