It is a medical FACT that just one use of cocaine permanently re-wires the brain. Often and extreme use over a long time destroys it. Obama = Exhibit A
It is my supposition that we have not had a cocaine-use-free president since at least 1992 - and maybe before that.
I have seen up close what cocaine - and, yes, marijuana - use does to people.
The extent of the damage may vary, but I consider it axiomatic that there will be some amount of damage.
The leftist media love libertines and drugs; they are not about to hold anyone seriously accountable for such abuse - especially a Democrat.
In my considered opinion, Obama is both psychologically and physiologically insane, from the combination of totalitarian indoctrination (both Marxist and Muslim) coupled with the prolonged and extensive drug abuse.
(Look at the rising automobile accidents in marijuana-legal states! Harmless? Yeah, right.)