I agree that much of it is the US's fault and that the US changing policy could help dramatically. That being said, if that happened today the cartels still ex

I agree that much of it is the US's fault and that the US changing policy could help dramatically. That being said, if that happened today the cartels still exist and they'll exist for several generations and they'll still have military, police, and government collaborators. Unless that goes away then the mindset which allowed the cartels to engage in what is essentially a cold civil war and has allowed more than 100,000 people to be killed (many tortured) will continue to exist. Until that stops existing there's no way in hell the US should open their borders and allow movement into US territory. You'd have the cartels (heavily armed and financed) moving into US cities and claiming turf, and then you'd have that violence here and even more guns available. It just isn't worth it. The cartels could be more powerful than the Italian mob ever was. If the cartels lose influence and Mexico becomes a much less violent place in a few generations, maybe then you can consider opening the borders. But how would it happen any time soon without harming a lot of innocent people? It's hard to exaggerate the brutality or (potential) reach of the cartels: https://en.wikipedia.org/wiki/Mexican_Drug_War https://en.wikipedia.org/wiki/Mexican_Drug_War