Uhhh, last I heard, we haven't made much progress in stopping that at all.
The number of clandestine methamphetamine labs busted up by Iowa law enforcement agencies last month plummeted 90 percent compared with July 2004, state officials said Monday. They credited the state's new, tougher anti-meth law that took effect in late May. The tougher law limits access to pseudoephedrine, a main ingredient in meth found in many cold medicines."
"The number of methamphetamine labs seized by police in Virginia has decreased by two-thirds since the state restricted access to one of the drug's key ingredients."
"Prior to the passage of this law on April 7, 2004, labs were seized in Oklahoma at the rate of 92 per month. After the passage of the law, the number of labs seized began decreasing each month and by August 2004, only 32 labs were seized. These figures show a 56% reduction in the number of seized meth labs in the five month period following the passage of the law."
Et cetera.