There are no 'open borders with Mexico' - what we have is a heavily regulated system with extensive controls and restrictions. This isn't theory - it's basic economics: restrictions create black markets, just as prohibition transformed a legal industry into a criminal enterprise of bootlegging and violence.

America has the world's largest prison population and plenty of criminal enterprises operating coast to coast. These aren't foreign imports - they're largely homegrown under our current system of restrictions and controls.

The current border system's complexity and restrictions create profitable opportunities for criminal enterprises while making legal movement more difficult - the problem isn't too much freedom, it's that overly restrictive systems tend to manufacture the very chaos they aim to prevent.