I already said what happened. Go look at all the states and cities that started with legalizing pot that now are decriminalizing hard drugs. Their cities are littered with drug addicts. Look at Seattle, Portland, San Fran, LA, Chicago and the list goes on. You do have states that legalized pot but do not have harder drug problems and that is because those states have not followed the trend to decriminalize harder drugs and those states and cities happen to be run by Republicans.
We don't have a homeless problem. We have a drug problem.