The ACLU has published a map of what it calls a “constitution-free zone” on what can no longer be called borders–as imaginary lines demarcating national territory–but frontiers in which “American citizens traveling from one place in America to another are being stopped and harassed in ways that our Constitution does not permit” just as if they were at a border checkpoint, where fourth amendment protections do not apply. These frontiers are 100 miles across and include not just the Mexican and Canadian borders but coastlines. The ACLU estimates that two thirds of the US population lives within these frontiers.