Nation & World | Mexican leader says U.S. shares blame for casino attack that killed 52 | Seattle Times Newspaper
This link itself says more clearly than I could what is discussed in the article, but I will add some additional cladding.
Mr Calderon is pointing out what likely is obvious to the whole world other than US officials, that Mexico's main problem with drug gangs comes from it's location adjacent to the world's biggest dope fiend and gun runner, USA.
We subsidize the drogistas by maintaining with legal strictures, heavy sentences and vigorous police activity the very high price and profit margins for their product. Then our arms industry sees to it that the Zetas and their ilk are much better armed and equipped than the local or Federal Police, so that the drug lords can keep the high value product flowing with its concomintant benefits of direct graft and payments to US and Mexican officials at all levels, plus the larger stimulus to their personnel and equipment budgets.
Everyone wins, except the Mexican and US citizens whose freedoms and often lives themselves are being grievously damaged by this evil farce.