Those employees pay taxes. They pay into the Social Security which they can't access.
edit: literally, do the math, 420K+ active H1-Bs, they should be at least making upwards of 70K per year, tax revenues should be upwards of a few billion dollars every year.
edit: literally, do the math, 420K+ active H1-Bs, they should be at least making upwards of 70K per year, tax revenues should be upwards of a few billion dollars every year.