> American employees are being replaced by cheaper H-1B visa workers. Ok someone explain to me exactly how they do that, because when I looked into working in

> American employees are being replaced by cheaper H-1B visa workers. Ok someone explain to me exactly how they do that, because when I looked into working in America H-1B is a lottery (with 30% win rate) and it only happens once per year. How exactly do these companies hire people with those constraints?