The situation at the US southern border is deadly. FPRI has suggestions.
Strategypage looks at things already occurring in this fight.
The problem however, has always been the lack of security at the border.
Afterall, if you did all those neat things but did not seal the prime revenue stream off to the cartels, it would be half effective.
The question is, where does the loot come from that fuels these cartels?
Answer: The Border trade.
And US and Mexico fighting the thugs from US Army War College white paper