This is objectively not true. Immigrants have plenty to lose. Take my own example. Living in America for a few years (first as a graduate student and then as a

This is objectively not true. Immigrants have plenty to lose. Take my own example. Living in America for a few years (first as a graduate student and then as a software developer), I have made strong connections and a social life here. I lose everything if I don't make it. There are two big problems for immigrants: The Green Card process takes ~10 years. Imagine staying put in one company for 10 years. The legal immigration system is so haplessly broken that if I lose my job (say, late in the GC process), I get kicked out. My wife can't work. I cannot have kids without them confusing nationalities. I cannot buy a house. Immigrants are living on a thin strand, sacrificing a lot. Motivated immigrants, who wish to start a company, cannot do so either because there are no visas to do so easily. Until we get a Green Card, we cannot quit our jobs and go on a road trip of the US, like my colleagues do. Realize that there is an opportunity cost, a small window, in which we all are highly motivated to start something. We immigrants typically waste that window in simply waiting for the Green Card to arrive (all-the-while, hoping we don't get laid-off). The loss of this opportunity is one of the biggest reasons why many choose to head back to their own countries to start companies. In summary, Immigrants have A LOT to lose. Grass is not green on this side either. Source: Me. An Immigrant working in SV who's not allowed to start a company because of the ridiculous immigration system.