Well, I certainly agree with the above--but a fence by itself will help nothing. The traffic will simply move to other areas of the border.
I have never said a fence by itself would solve the border issues. I have always said it will be a complicated process, requiring many steps. If step one is not a fence, then the other steps are meaningless.
You can't deport them faster than they can illegally enter, without a barrier. What we have now is a revolving door. Illegals return within hours or days of being deported, and the Border Patrol itself admits to only catching about 1/3 of the estimated 3 million illegal crossers each year.
Here is an interesting link to an article that came out about a year ago in USA Today. It will help you get some perspective on the illegal problem we really have on this border. I live very near the area discussed in the article.
http://www.usatoday.com/news/nation/2005-02-22-border-patrol_x.htm
To where? Will illegals raft through the Gulf of Mexico and come ashore or what?