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.
There were a lot of voices saying that Trumps 2016 election would wipe out the stock market too, and the exact opposite happened - levels of job growth and prosperity that pushed the numbers up and broke records.
Do you think the instability of a deranged pedo who stole an election and is promising to import refugees and throw trillions of dollars into tranny education, communist preaching, green new deal insanity and worse is going to improve things? Would that be seen by markets to be a positive, as a reason for optimism or an incentive to invest?
Above all else, business growth and the markets for which this is a forward indicator likes stability. Joe is not stable.