Well, a fair post from skipster.
Big, its easy to beat up on the politically powerless, and hold them up to blame for a complex problem that involves a lot of different people, including you and me. Surely, you're Bigger than that.
As to your 1/3 assertion: let's be clear, undocumented immigrants basically compete with those who are unskilled and uneducated, and then only in certain industries: farming, construction, and services. One primary reason first generation immigrations are opposed to further immigrants, is because they're the ones most often competing for jobs with the newbies. This is in our history. But since you do have an education, Big, you are not really in competition with undocumented immigrants, and their presence is not affecting your wages in any way. In fact, you benefit from cheaper goods and services. So I think you're point in the wrong direction here.