"a recent case in Oklahoma City, where a former state narcotics agent pleaded guilty in such a gunrunning scheme."

How many law abiding citizens in the US would it take, making straw purchases, to ship more than 90,000 firearms to Mexico before BATFE developed some suspects?

Any idea what the drug cartels would pay for my evil looking GSG-5 with the fake suppressor?

Guns are one of the many thousands of items which are smuggled across our southern border. Smuggling goes in both directions. Maybe if the US stopped the flow of US currency moving south, some of the other things would slow down a bit as well?