pfft. The american 'workforce' is lazy and has been for a very long time. Exploitation is relative and I think the american worker needs to be exploited in order to get his ass in gear and do something. Working 9-5 and then reaping 80,000$ (including health benefits) is not hard work by any stretch of the imagination. But thats what people expect and so we transform into a service economy.
We have been riding on immigrant hard work and ingenuity for a very long time. Our large economic sectors are the ones that have to do with advancement in technology and ideas. Now of course that we have clearly laid out to the world that we are hostile to everyone, the type of hardworking innovative immigrants that we want are no longer coming here.