Getting out of bay area, downtown NY, DC or any upscale area of major cities, you can see it with your own eyes. Free immigration will destroy the so-called tech jobs gradually just like what happened to manufacturing workers. Of course Corporations want globalization because it works best for their interests. They don't care a bit for people who lost their jobs and cann't pay bills. Neither do politicians.
Looking at the inner cities where poor black communities are congregating, liberals say they care about them, so what they do? Nothing but promising them more welfare which actually eventually destroy their morale in the long run. Because there are not many jobs out there for them, in order to buy votes from them, they just tell them:"I will give your more free stuff if I am elected". Sanders essentially tells them:"Everything is gonna be free if I were president." INSANE!