-which requires people-
Yeah they do but the majority of their product comes legally. There has been and never will be any shortage of drugs in the US just like there will never be any shortage of guns in the US. Both arrive here just as legal as your average toaster. If you believe that the southern boarder is the main entry point for drugs in the US, well, I am guessing you do not live here. This is not Australia and trying to take your experience there and apply it here just does not work. These are intrinsic issues and drug cartels know the US like the back of their hands. The cartel move drugs here legally because they have huge cash reserves and its much easier to just pay for legal transport then to rely on some mule to cross the boarder and get caught. How often do you ever hear about some illegal immigrant on the southern boarder getting caught with drugs. They catch a lot crossing over the boarder illegally you do know that.