Can you explain why we have had previous waves of immigrants who come out with nothing but a strong work ethic that they pass on to their kids who went on to be successful?
Some have and Some have not. Generation ago things were more fluid than there are now.
Jewish and Asian migrants have done amazingly well .
Anyone born in this country who makes good life choices and works hard can make a good income.
Based on what? you have some statistics that prove that? You have measured everyone in the countries's live choices and how hard they worked? Define Good income.