This was of notice to me as well. I work as an information systems manager at an upper management level. For the last 5 years, I've been with a large company. They farm some jobs overseas. We have some visa h1 workers in house. There are a few Asians that went to college here, probably on a grant, that don't need a visa. I haven't seen the overtake of American born jobs. If the department I manage was required to train their replacement because the company could save money, we'd all walk off the job. I'd lead the way. The bastards in executive management would do that in a heartbeat. For some reason, they haven't. I do see the other side of this as it pertains to efficiency. The visa workers and Asian grant employees produce more. They don't whine about stay at home jobs. In general, they show up with appreciation. As an American, I'd stand by American workers on principal.
Along with importing foreign tech, this country needs to wake the hell up and reform the education system. Reforming the visa bill will be meaningless without it.
