I am afraid that won't be enough. The government spendings on border security in the past years have increased three fold only to see an increase in the number of illegal immigrants.
Also Hades, if you check the numbers, a large portion (30~40%) of the illegal immigrants here are women and the majority of the illegals are family-oriented and hard-working people. Don't get the wrong impression that most of them are single men and are either gang members or drug dealers. Secondly, they do contribute positively to many industries here. I have no problem with cracking down on the criminals among illegal immigrants with harsh measures, but a guest-worker program seems necessary; otherwise, US would be hurting itself by driving away a part of its work force. (Our unemployment rate is still around a very healthy 5% mind you.)