Anyway despite my broken english to produce cocaine or heroin you must have large fields and in Europe large fields attire the LE and it's cheaper to import from abroad,in this article is explained why.

https://www.livescience.com/59452-why-opium-is-grown-outside-us.html

Though opium yields vary based on growing conditions, 2.5 acres (1 hectare) of poppies typically produce between 17.6 and 33 lbs. (8 to 15 kilograms) of raw opium, according to the book "Opium: A History" (St. Martin's Griffin, 1999). Estimated yields of heroin from raw opium are between 6 percent and 10 percent. Thus, the acre of poppies found in North Carolina would yield a little more than 13 lbs. (6 kg) of raw opium and 1.3 lbs. (0.6 kg) of heroin in a full growing season in the best of circumstances.

That's not nothing; CBS News reported in 2014 that heroin was going for $60,000 per kg (2.2 lbs.) in New York City, though actual prices vary based on purity and supply.