USA companies are being systematically deregulated to bare minimums all accross the board and their tax bills have been significantly reduced so they can keep more of their profits....Being allowed to simple pass the social and environmental externalities associated with their cost of doing business to society will for sure allow them to produce at even lower costs and generate even bigger profits and make stocks more attractive...Reducing social and environmental costs of doing business to the minimum and passing those externality cost to society should be expected to be good for stocks prices ...Can this be the reason behind strong stock markets under president trump?. I think yes, what do you think?