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.
Or it will be like telling people to wear a mask and stay home and stfu... Not like most people question anything and we all know most people think in the mind set of " as long as it stays the same I'm happy"
As a Californian I would bet california will do nothing besides complain like usual. Most have never hunted a animal, shot a gun or done hard labor in their life's...