u have to pass NCLEX first. after that if u find a employer that wanna sponsor u can file greencard. but its been closed from last few years. my friend is a nurse she cant work after her OPT expires. she did BSN from USA. its gonna be harder for u. i would suggest u to apply for student visa as a MSN. then take NClex u might work if u are approved for a CPT. but its gonna be tough for u like i said coz of international cant work without H1 or valid OPT. i wish u a good luck on ur part.my 2 cents