I'd like to see a credible source for this. There are references to a handful of shady companies misbehaving, but I have yet to see hard facts or credible stats

I'd like to see a credible source for this. There are references to a handful of shady companies misbehaving, but I have yet to see hard facts or credible stats (I'm not saying they don't exist). On the other hand, I have seen a lot of xenophobic hysteria and comments from American "IT professionals" whom I certainly wouldn't want to work with. In my own experience, my employer is struggling to find qualified people. We are a fast-growing startup in LA and simply cannot scale as fast as we would like (mail me if you want more info). There is no shortage of foreign applicants but, afaik, I am one of only two sponsored H1B employees.