Iím no expert but did consider it many years back so take anything I say as most likely out of date. Most obvious thing as a foreigner you need a green card to get a job and at the time I was thinking of it they were very difficult to get, I think there were/are limits on the number that are issued per year. There are green card lotteries advertised which are a scam so donít have anything to do with them. You can enter the US if you intend to set up a business but you need to have a huge amount of capital behind you to meet the criteria for entry and it was conditional on you taking on US nationals as employees. As I said it was a long long time ago that I was considering it but hope that helps.