FILE - In this Feb. 9, 2012, file photo a soldier stands in a room full of barrels containing white and yellow powder after a seizure of 15 tons of pure methamphetamine at a small ranch in Tlajomulco de Zuniga, on the outskirts of Guadalajara, Mexico. Mexican drug cartels are flooding U.S. cities with cheap, extraordinarily pure methamphetamine made in factory-like "super labs” _ a surge in production that has all but negated the nation's long effort to curb meth production at home with tighter controls on key ingredients. (AP Photo/Bruno Gonzalez, File)

Associated Press
FILE - In this Feb. 9, 2012, file photo a soldier stands in a room full of barrels containing white and yellow powder after a seizure of 15 tons of pure methamphetamine at a small ranch in Tlajomulco de Zuniga, on the outskirts of Guadalajara, Mexico. Mexican drug cartels are flooding U.S. cities with cheap, extraordinarily pure methamphetamine made in factory-like "super labs” _ a surge in production that has all but negated the nation's long effort to curb meth production at home with tighter controls on key ingredients.  (AP Photo/Bruno Gonzalez, File)
FILE - In this Feb. 9, 2012, file photo a soldier stands in a room full of barrels containing white and yellow powder after a seizure of 15 tons of pure methamphetamine at a small ranch in Tlajomulco de Zuniga, on the outskirts of Guadalajara, Mexico. Mexican drug cartels are flooding U.S. cities with cheap, extraordinarily pure methamphetamine made in factory-like "super labs” _ a surge in production that has all but negated the nation's long effort to curb meth production at home with tighter controls on key ingredients. (AP Photo/Bruno Gonzalez, File)
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