I don't see how this is an issue. The US follows the capitalistic model of considering its citizens as resources (workers), and thus uses immigration as a state

I don't see how this is an issue. The US follows the capitalistic model of considering its citizens as resources (workers), and thus uses immigration as a state policy to get the best human resource from the world. The american society has also been molded to accept that those who don't meet the requirements of employability or don't have some financial backup (thus still contributing) are dumped in age old homes, jail or on the streets (the homeless), and considered useless and treated as a burden on society, thus making space for more new immigrants.