Partial solution to the illegal immigration problem?

Some policies of President Bush's I agree with, but one of which I don't is his blatant opening of our borders to illegal immigrants, not only allowing people who want to come to our free country without going through the proper legal routes (and so we can get more "cheap labor") to become permanent citizens, but also opening the doors wide open for potential terrorists and other miscreants to slip through unnoticed. I'm not opposed to America's being the "Melting Pot," but there are legal ways to come to our country. It's even more dangerous to have such a policy in this day and age. Evidently, Gov. Rick Perry is also fed up with the potential danger of keeping a relatively open border and has proposed some ideas of his own to enhance security. Here is a potential solution of putting up a fenced barrier, much like those erected to keep out highway noise, that are inexpensive to install and difficult to scale. This would be a good investment on the government's part to help cut down on the illegal residents--and worse--out of our country. Bush is our President, our Commander-in-Chief, and the last thing he needs to do is to enforce illegal activities, even if it is just living in our country with all the benefits without paying any taxes.