Where does illegal immigration mostly occur? Here's what the data tell us

The westernmost edge of the U.S. border wall separates Tijuana from San Diego. Most undocumented immigrants in this country did not enter the U.S. at the Southern border.
The westernmost edge of the U.S. border wall separates Tijuana from San Diego. Most undocumented immigrants in this country did not enter the U.S. at the Southern border.