How AP obtained and analyzed data on 4.5 million migrants released at the U.S. border
The AP requested anonymized individual records on every person released at the Mexican border — including ZIP code, nationality and other characteristics — to map arrivals and destinations.
Newly obtained data on the unprecedented surge of border crossings over the past decade is shedding light on who entered the U.S. and where they went. Here is some information on the crossings, the data on 4.5 million migrants, and how The Associated Press obtained and analyzed it.