For people who immigrate to the US from a reasonable or well off quality of life, they are often less risk averse in the US than your average US citizen from my sampling.
Many take risks to start businesses, make big purchases, pursue a novel career and so on. These are often fairly large financial risks, many with bankruptcy as an option, and I often ask what their backup plan is should their risky endeavor fail. I often hear some quick poorly thought out plan and after a few more questions, the real backup plan emerges: or I'll just go back home.
If you're not fleeing dire conditions, many immigrants come to the US to gamble for an opportunity to great success. If they succeed, they stay, if they fail, they go home. I had several immigrant friends that did just this. The vast majority now live back in their home countries and based on their social media, they seem to be doing quite well there. The few who have stayed are doing markedly better than they did in their home countries, jumping several socioeconomic brakets.