OR: We want more YOUNG, low paid workers tied to a company,
I fully agree with "The cynical among us suggest foreigners are more than willing to work in the US on lower wages than citizens will accept, cutting Americans out of jobs and saving bosses a pretty penny."
They could also stop getting rid of anyone who starts to get older, more expensive, or unwilling to work insane hours. The cult of the young Brogrammer a-la Facebook is so prevalent that people publish ACM articles that directly state that Developers: "Just like competitive athletes, they simply burn out by the time they reach their mid-30s.". http://cacm.acm.org/magazines/2014/12/180776-the-responsive-enterprise (presumably requires membership, also found in the December 2014 (Vol. 57, No. 12)/The Responsive Enterprise: Embracing the Hacker Way).
Instead of "Give me your tired, your poor, Your huddled masses yearning to breathe free...", it is Let me trap your STEM graduates for a decade. and then go back for someone fresh.