Except nobody with an iota of sense believes the wall will impact drug trafficking, which goes primarily through legal checkpoints, the mail system and via airplanes. Sam Quinones: Border walls won't stop drug trafficking from Mexico. Here's what might.Given that the wall will make both drug enforcement (preventing the vast majority of imported illicit drugs coming up from the south) and military easier (same reason, basically)
You betcha.
preventing the importation of the nastiness (drugs, gangs, etc., ) is a whole lot more cost effective than spending the money it costs to chase it all down later.
The areas where drugs cross by land the most are places which already have walls.