Of course they are paid the same. It's inviting a lawsuit not to. You cant pay one systems engineer x and another half in same position let alone justify the H1b in the first place. Issue it not their pay it's everyone's pay when you consider Econ 101 where, the price of labor, like anything else, is a function of supply and demand. With unlimited H1Bs you effectively freeze or even lower everyones wages rather than pay more to attract Americans to the field and invest in existing and prospective employees education.
Ultimately it's a race to bottom. Labor get less % of their work. Capital gets more % of their work. This should be obvious looking at the static worker pay last 20-25 years while CEO, officers and stock market sky rockets.
Why do you think all business groups, chamber of commerce, CEOs love open borders? More profit. Less competition from their would be upstart workers who made a few million (back in the day)
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This whole issue boils down to what kinda of society one wants to live. One where capital holds all the cards and gets most profits like time eternal? Or a world where workers gets paid well, gets leave, are safe, HC, and such the labor movements fought for that you and your parents enjoyed. I'll agree that we are lazy like mani states - mainly mentally lazy and forget what life was like in gilded age and doomed to repeat it. Serves us well.