Any cannabis (marijuana) that is smuggled into the country, tends to come from mexico. It is of extremely low quality because: it was badly grown and/or has been impregnated (or, it was schwag to begin with) , it is dried way the hell out by the sun, then compressed and flattened into bricks, for ease of smuggling . All of the activities aformentioned cause the plant to lose THC. And by the time anyone is stupid enough to buy it, its got about 2%-3% THC. And when smoked, it tastes like shit, it harsh on your lungs/throat and will generally take 15-25 hits to actually feel a goddamm buzz.
Any real smoker would rather have a dimebag of White Widow than a kilo of brick bud.