This is the last post I will make on the subject, but it is stupid hard to immigrate to the US legally. Basically you need to invest $1m cash into the US economy, create at least 50 full time jobs directly, be a doctor or some shit, marry an American, or last, come here on an H-1B visa, which there are very few of. Immigration into America is stupid hard and numbers are very low. It's literally a non issue. If you don't believe you can go look up the waiting list for H1-Bs.
Note: most H-1Bs expire like student visas, meaning you go back when it runs up, you get fired, quit, or the company goes under. H1-Bs are also non-transferable, meaning that they are for specific jobs. You can't even get the exact same job at a different company.