1. Many of the most entrepreneurial folks I know are legal immigrants. Such folks start businesses and create jobs and services.
2. The best and the brightest leave places like Eastern Europe, India, China, Korea and even Latin America to come here legally.
3. I have too many friends who have been put through HELL by INS/ICE simply for trying to do it legally.
The only "legal" immigrants I have a problem with are those from Muslim countries, although I can't think of a way to legally single them out for prohibition of entrance to this country. Besides, you do have folks like my Iranian ex-girlfriend who HATE Islamism and come to the west to get away from it.
Thank you for your honest answer - I have no problem with racial profiling or even hightened scrutiny for Muslims, especially from terrorist havens - it's a sad reality for the 99.9% who aren't terrorists, but do they really want to come into a country that does NOT protect everyone against terorism?