If you take a meth addicts govt. assistance away, they will do anything they can to fuel their addiction, crime, prostitution, or even worse, they'll start cooking meth and selling it. If they do start drug testing people that apply for assistance, when they get a positive on meth, that meth user should be immediately put in a lock down rehab. Pretty harsh, but meth is incredibly addictive, they users aren't going to stop when you take their assistance away. Of course the rehab costs would be huge, and I doubt taxpayers would be willing to foot the bill. And I saw a statistic that 90% of meth users that complete rehab go back to using meth. Meth is evil stuff.