ST. LOUIS (AP) - Mexican drug cartels are quietly filling the void in the nation's drug market created by the long effort to crack down on American-made methamphetamine, flooding U.S. cities with exceptionally cheap, extraordinarily potent meth from factory-like "superlabs."
Although Mexican meth is not new to the U.S. drug trade, it now accounts for as much as 80 percent of the meth sold here, according to the Drug Enforcement Administration. And it is as much as 90 percent pure, a level that offers users a faster, more intense and longer-lasting high.
"These are sophisticated, high-tech operations in Mexico that are operating with extreme precision," said Jim Shroba, a DEA agent in St. Louis. "They're moving it out the door as fast as they can manufacture it."
Police from the Federal Public Ministry examine drums of precursor chemicals for methamphetamine that were seized in Queretaro, Mexico.
The cartels are expanding into the U.S. meth market just as they did with heroin: developing an inexpensive, highly addictive form of the drug and sending it through the same pipeline already used to funnel marijuana and cocaine, authorities said.
Seizures of meth along the Southwest border have more than quadrupled during the last several years. DEA records reviewed by The Associated Press show that the amount of seized meth jumped from slightly more than 4,000 pounds in 2007 to more than 16,000 pounds in 2011.
During that same period, the purity of Mexican meth shot up too, from 39 percent in 2007 to 88 percent by 2011, according to DEA documents. The price fell 69 percent, tumbling from $290 per pure gram to less than $90.
Mexican meth has a clearer, glassier appearance than more crudely produced formulas and often resembles ice fragments, usually with a clear or bluish-white color. It often has a smell people compare to ammonia, cat urine or even burning plastic.
"You can look at it and see it has a much more pure look," said Paul Roach, a DEA agent in Denver.
The rise of Mexican meth doesn't mean American labs have disappeared. The number of U.S. meth labs continues to rise even as federal, state and local laws place heavy restrictions on the purchase of cold and allergy pills containing pseudoephedrine, a major component in the most common meth recipe.
But south of the border, meth is being made on an industrial scale. Sophisticated factories put out tons of the drug using formulas developed by professional chemists. The final product often is smuggled into the U.S. taped beneath tractor-trailers or hidden inside packages of other drugs.
Like the U.S., Mexico has tightened laws and regulations on pseudoephedrine, though some labs still are able to obtain large amounts from China and India. To fill the void, cartel chemists have turned to an old recipe known as P2P that first appeared in the 1960s and 1970s in some parts of the western U.S.
That recipe uses the organic compound phenylacetone. Because of its use in meth, the U.S. government made it a controlled substance in 1980, essentially stopping that form of meth in the U.S. But in Mexico, the cartels can get phenylacetone from other countries, DEA experts said.