I have to say that I so much agree with pohnpei397 as well. How can we really control the importation and distribution of drugs, regardless of technology, fences, more patrolling, dogs, etc., when we cannot close our borders from Mexico? The problem is reaching dramatic proportions when we see drug wars that used to be so prevalent with drug cartels in Colombia, etc., that have moved into the southwestern portion of this country, such as Arizona and New Mexico. It's hard to keep water from rushing onto dry land when the dam has a hole in it. And while the drug war continues, are we as able to keep up with it in that we are now forced also to search out terrorist threats coming into the country?
It is an enormous problem. There don't seem to be any easy answers or foolproof methods for stemming the flow. And having seen firsthand how drugs can destroy young lives, it's tragic that we cannot do more.