"Some end up in the US on work visas because the US citizens purportedly do not have the right skills. In reality, there are plenty of skills here, but foreign workers will work for a lot less. Since companies can hire a programmer from India or Russia for 1/3 the cost of a US worker, that's what happens."

This is what tech companies need to iron out before the American public is going to go along with increasing H1B Visas