Bodyguard Moving To America?

I'm 18 at the moment and have wanted to move out to america all my life (preferably Las Vegas) and work as a Bodyguard, I've been told it's easy but then I've also been told that it's extremely hard to move out there now days so what do you guys think? I don't have any qualifications apart from my SIA Licence, and i also hold a full UK drivers licence.