我领养孩子的时候还是绿卡,成为公民后将孩子带入美国,为他申请绿卡,现在批了。以后为他申请公民的花,是要两年就可以,还是要等18岁?
-Not different. Just file N-600 to get the Certificatre of Citizenship or directly apply for the US passport.
另外,他还没有SSN,怎样申请呢,用绿卡就可以吗?
-Yes and go to the local SSA Office to apply for it. He/she may not appy for it until get the US citizenship certiticate or US passport. Thus, he/she does not need to update the SSN card again. Up to you, anyway.