I've also come across the option to study at a U.S. ATP CPL Flight School as an International student. For that I'll need an F1 or M1 visa. However, let's say I finish flight school and possibly even obtain a degree through a partner university, wouldn't I need a Greencard to be able to start working at a regional airline? Or to ask better, how can I get a greencard whilst being a student / graduant from the flight school with all necessary licences except a Greencard? Obviously, my brother's sponsored greencard won't be ready until 2037 probably.