It is impossible to immigrate to the US unless your employer is willing to go through the time-consuming and expensive process of sponsoring a visa + green card

It is impossible to immigrate to the US unless your employer is willing to go through the time-consuming and expensive process of sponsoring a visa + green card, which they have little reason to do since they can pay you less over here. I've been designing chips for years in the UK at ARM and elsewhere, haven't encountered anyone moving to the States