Thor wrote:What would happen to me, if I moved in to US and wouldn't work or try to find work?
If you were a refugee then you'd be given housing and monetary help. It'd last as long as you were termed a refugee. But you'd be given a green card and help in integrating here (language classes, education). It's not that different there than here.
If you were a straight up immigrant you'd be given a green card and then be part of whichever state's workforce laws for unemployment and welfare. There would still be government language classes available and other education, but not as much. If you were unemployed your green card status would be reviewed but it would depend on your immigration status if you were deported or not. If you were in the process of getting citizenship then you'd be fine and be able to get any social welfare. If you were only on a green card then you'd get some but much less help until your green card ran out.
The American Immigration system is much more advanced and complicated than any European countries. I've worked with refugees here back when and had other contact with some immigration rights groups. We have literally thousands of visa types here, everything from tourist visas to medical visas to refugee status to 100's of varying green cards (work visa's) depending on job type, immigrant status and time allowed in the country. We are a land of immigrants. There are almost 40 million immigrants living in this country (13%) and another 40 million second generation that makes every 4th person here with a direct connection to immigration, and it makes us one of the most diverse countries in the world.