America's "Constitution-free" zone

The map was created by the ACLU to highlight  the areas within 100 miles of the U.S. border where exceptions are made to the standard provisions of the Constitution.

The Fourth Amendment to the Constitution contains a border-related exception to unreasonable search and seizure laws, permitting searches at border checkpoints that wouldn't be permitted elsewhere. But federal statute 8 CFR 287.1 (a)(1-3) defines the border zone for enforcement purposes as encompassing an area within 100 miles of the actual border, with the possibility of extending it further under certain circumstances. This means that the US Border Patrol could conceivably set up random checkpoints asking travelers for a passport in places like Columbus, Ohio; Houston; or anywhere in the state of Florida.

I had thought the map exaggerated the distance, but when I measured at another site, it appears the orange margin is correct.

I think this article is particularly worth noting in that it dates from 2008 - well before the current concerns about Arizona's new immigration law.