I've seen some of our greatest minds driven out of our company by the side effects of outsourcing.
Perhaps things are different on the East Coast
but I repectfully suggest you really know nothing about what's going on out west.
Also, as I said repeatedly, you can at best argue for problems existing in one industry and in one geographic area. (Actually, you personally are a rare exception: you post is very scientifically worded, without over-reaching). H1-G visas are used in other areas, such as to hire faculty in major universities. Since "displaced" faculty does not whine, one simply does not hear about that use of visas. But it does exists and serves a major purpose.