shootinstudent, percentagewise, the two main sources of money for the Mexican GDP is from the sale of oil and the money sent home by Mexicans working in the U.S. That's a publicly reported number.
The overall workingman's situation in Mexico is such that without their people up here, the place would blow up in a new revolution that would send even more people north as refugees. It was bad enough in 1910, when the entire population down there was 17 million. Mexico City, alone, is now more than that. (Estimated at 17 million when I was there in 1978.)
(An 18-year-old wetback kid from Mexico City who showed up at my place in 1985 looking for work told me that yeah, plenty of work, back home, but a day's wages wouldn't buy a day's food.)
Between Del Rio and Laredo, Texas, some narcotrafficantes bought ranches. Offered double the prevailing price for land, to be paid "en plombo o oro"--in gold or lead. Alternatively, they'd bring dope across the Rio by raft and load it into trucks. They'd then drive across a ranch to the highway. A rancher was commonly told to stay home that night. Knowing that the smugglers had M16s and night-vision equipment...Some variants of that are still going on.
Incidents at that crossing up toward El Paso are quite common.
Mexican army generals, in cahoots with state governors and or city mayors, have "areas of interest" for marijuana farms. If you fly the border in the morning at around 10,000 to 12,000 feet when the air is cool and clear, you can use binoculars and see some of the irrigated fields and airstrips in the middle of nowhere with a dozen parked planes. Look on an El Paso Sectional Chart for the (IIRC) Culbertson County VOR near Van Horn. Follow the 192-degree radial into Mexico. See the nice airstrip? Yuppers...
Generals are involved so their soldiers can escort the shipments northward.
Narcotrafficantes did not corrupt Mexico. Narcotrafficantes are cash cows, whom the establishment milks for money. This does not mean there are no anti-drug, honest folks in the Mexican establishment. It merely means they're a minority.
Believe me, WND ain't blowing smoke.
Art