Illegals have been muling drugs for a long time, but it is an inefficient means. More often than not, their role is to be a diversion to tie up border assets - intentionally "sacrificed" by the coyotes working with the cartels.

Mexico is right about one thing. If the USA was not such a large consumer of cocaine, heroin, marijuana and pill-formed mind-benders, the cartels would be out of business. So, when people say that "taking drugs" is victimless, and that users should not be criminalized, as long as there is a demand, there will be a supply. In this situation, every drug-related homicide - anywhere along the manufacture-delivery process - no matter which side of the border it happens, can be directly tied to every cocaine inhaler, self-jabber and pill-popper that society wants to treat as being "ill" for the sake of fun and games.