you have NO CLUE what your talking about.
People from Mexico, and the Mexican CARTELS have almost NOTHING to do with each other, so familiarity with one does not make you an expert on the other
(kinds sounds like the sara palin 'I can see russia" response)
The migratory Mexican Population is occasionally employed by massive grows, but they are also employed by the same groups to produce Meth in so called "superlabs" which run on diverted chemicals from Mexico because of their size. Mexican illegals would be the ones digging holes, running water lines, and harvesting the crop (they wouldn't be at the grow for the whole summer, nor would they be the ones employed to protect it. (in short, your mexican buddies have nothing to do with OPs of this magnitude)
Your mexican friends probably do grow reasonable plots that do not destroy the land, but you dont really seem to understand the logic put forth by the opponents of these operations. (as they are not talking about tiny little 50 plant grows)
-The land they plant on is not theirs, which means that anything they do to the land is considered DAMAGE.
-They Divert all of the water from the surrounding area to their grows, this is VERY BAD for the forest/wildlife.
-They use fertilizers and other agricultural products in protected wilderness zones, this tends to produce burdensome (to the land and water table) plant growth.
Ever heard of a legal concept called "plausible deniability"? well, its the reason why they plant on others land, not to induce an ill-fated investigation against someone who obviously did nothing wrong.