The “gasoline of crime”
Free Internet Press:
More than 6,700 licensed gun dealers have set up shop within a short drive of the 2,000-mile border, from the Gulf Coast of Texas to San Diego – which amounts to more than three dealers for every mile of border territory. Law enforcement has come to call the region an “iron river of guns.”
While U.S. political leaders and presidential candidates have focused rhetoric, money and time on stemming the northward flow of drugs and illegal immigrants, far less has been said and done about arms flowing south, largely from states with liberal gun laws, into a nation where only police and the military can legally own a firearm.
Mexican authorities have been pressing the United States to do more to help a border force they describe as overwhelmed and often intimidated.
“Just guarantee me that arms won’t enter Mexico,” Mexico’s public-safety chief, Genaro Garcia Luna, told a radio interviewer recently. Stop the flow of guns from the United States, he said, “and the gasoline for the crimes that we have will run out.”
mexfiles.net 
Guns should be legal in Mexico, Drugs should be legal in the US. No border fence. No government subsidies in the US or Mexican economy. No PEMEX, but rather competitive private industry should be selling gassoline and building oil refineries. Mexico would still have cheaper gas than the US.