The Times' article describes how an airborne radar system showed that in a small, 150-square-mile area of the U.S.-Mexico border, there were nearly 2,000 successful illegal crossings over a three-month period last year. This comes as a surprise, since we've been told that our border is finally secure.
Rep Michael McCaul's (R-Texas) comment, that "you can't measure what you can't see," is a dead-on description of our border security. Without a system like the airborne radar, we have no idea how many people successfully cross the border.
In 1986, the last time an immigration overhaul was passed, it was said that the problem was fixed. Apparently not.