https://www.globalsecurity.org/security/systems/border-barrier.htm
With the establishment of the fence, crime rates in San Diego fell by nearly half between 1989 and 2000. The number of illegal immigrant apprehensions decreased from more than a half million in 1993 to just over a hundred thousand in 2003. The fence also helped stem the tide of drug smuggling with cocaine seizures dropping from 1200 pounds to about 150 pounds and a decline of 58,000 pounds of marijuana coming across the San Diego border in 1993 to just over 36 thousand pounds a decade later.
Edited by Spanky at 10:37:23 on 01/23/19