On what should they base their decision? All the criteria YOU set forth---"Drug use is an act of self-destruction. [...] Drugs are designed to fool the brain into thinking they're good for it. Fraud is an intrinsic component of every drug sale."---are true of the chemicals alcohol and nicotine. So, again, should Congress ban those? If not, why not?
that's a big load of bull
Marijuana is less addictive than alcohol or tobacco (Institute of Medicine), and unlike alcohol does not increase violence (USDoJ's National Criminal Justice Reference Service) or cause fatal overdoses.