hi to all again ask my father told by immigration officer we can apply direcly to u.s.passport but my father said he got his u.s.passport here in u.s.a. and he was just stay here for 6 years and we are the chids had no greencard yet we are in aos proceess and the immigration said oh! yeah they need to get there greencard fisrt and apply for N-600 certificate and need to wait 5 years is this thru wee really dont know what is true we are still under aos how we can apply for u.s. passport pls advice us.........thanks to all again........