I think if you look at my posts to this board you will find that I have consistently complained that anti illegal immigration advocates have been unreasonable in their demands. I still believe that is true and that such advocates have circumvented a political process wherein they actually field such candidates rather than hijacking candidates without that position.
When Pat Buchannan wins the nomination or Tom Tancredo, I will happily agree with you. Until such time, the anti-illegal immigration crowd was an important factor on why Republicans lost in my opinion.
I agree with you, and that fact needs to be fully understood by Republicans, beginning with the President. However, you are looking at effect, rather than cause. As I said before, the Bush administration and the open border Republicans are the First Cause.
That doesn't mean they are the first and only cause of the illegal alien problem. This administration's failure to make much of an effort to secure the border is what I'm referring to when I say 'First Cause', regardless of any other administration's failures. No blame shifting.