No system is going to be perfect, how can "high-skill" immigrants be evaluated with absolute certainty that they are, in-fact, highly skilled. I am sick and tired of employers in the U.S. viewing people with degrees from universities in third-world countries as if they are equal to a degree from the U.S (and thus possibly passing over US workers who may not have completed a degree program). I realize that some immigrants come here for college and that would validate their skills-sets, such as "if they graduate from the U.S. university with high grades, then they can stay and work" but it seems to me a lot of these supposedly highly skilled, supposedly "better than the average American" tech workers are people who were educated exclusively in another country and its not comparing apples to apples, in my opinion.