If your friend wants to avoid stress, being an illegal in the US is not a good way to do that. It's extremely stressful to live as an illegal in the US right now, as they've really been cracking down on illegal immigration. However, if he really wants to live in the US, he can try the green card lottery (which is not as crazy or difficult as you think!), or he can start a business (actually quite easy for a foreigner) in the US, and every six months leave the country and then return. I know some Argentines that live here illegally and are doing well for themselves, but they can't really leave the country because they won't be able to come back for ten years since they let their visa expire without leaving. That's another thing--let your visa expire without returning home and they don't let you come back for another ten years.