I'm a Canadian married to an American Citizen and I work at SkyWest. To be quite honest with you, it will be very difficult for you to find a regional carrier to sponsor you for a work visa (such as an H1B) or a green card. A green card through employment make take years to get, even if you can find some company to sponsor you. It costs a lot of money, and lawyers (highly recommended when going through employment) cost even more. The immigration system here is a nightmare to say the least. You'd be better off with AC Jazz if you don't have an easy pass to a green card. Like I said, I am married to an American citizen, went to school here, flight instructed here, English is my FIRST language and still didn't have an easy time getting a green card. Not trying to be negative, but unfortunately it's not just as easy at applying. Let me know if you have any other questions.