That actually depends on the sector of the border you're talking about.
Right now, the Tucson sector is the busiest along the southern border. In the first 5 months of FY '06 (Oct-Feb) we've seen 42,000 apprehensions per month.
Last year saw the highest number of apprehensions in this sector, ever, and this year is on track to outpace '04.
Doesn't more apprehensions mean fewer illegal entries?