How do I go about becoming a boxing referee?

One of my life long dreams is to be a referee in boxing, and I was wondering how I would go about doing it.|||Wow, how random and interesting. That's one of those jobs you never think about, unlike being a doctor or something. I just googled "become boxing referee" and here's what I found:|||trying googling usa boxing. This is for amitures, but a good place to start.