拿到綠卡後如果都有報稅, 或者你沒有工作不需要報稅,填NO。
拿到綠卡後如果你需要報稅而曾經沒有報稅(failed to file tax returns),填YES。移民麵談官員將會要求你作出解釋。
This question has been asked many many many times! Google USCIS explaination or lawyer's answers about this question yourself if you don't agree with the above.