Well, I'm not sure yet. But we've got to put one on the southern border right away!
Going after the employers of illegals would be a big step in the right direction. Many illegals (as well as legal immigrants), however, come here not for jobs but to commit crimes, get on welfare, or form terrorist cells.
Considering the large numbers of these illegals who are roaming our country, massive deportations are essential. They can be directly by roundup or encouraging them to leave on their own accord (by clamping down on perks, etc.)