Your comment is very atypical in this thread. It is the only one that puts the impact of the visa in perspective. The displacement of risk from company to employee.
This is my main concern of H1B's impact, lack of training or opportunity for existing candidates. It is telling how a few other comments mention the skills gap but all of them focus on it being a employees problem and to solve it they just need more college or training. While I can't argue with the positive impacts of H1B's creating value there is a continuing cost imposed on society to make the individual take the risk of training instead of the company cultivating a workforce. I think individuals do need to have some skin in the game when they receive a investment from a company but by completely displacing the cost on to workers and making up for lack of investment by allowing more H1B's seems to be a shortsighted solution.