我是美國公民。兩年前用I-130表為妹妹申請美國移民, 妹妹為beneficiary。她的丈夫和孩子也填在I-130表上了，為derivative beneficiaries.
現在，妹妹的丈夫和孩子準備填DS-160表，申請來美旅遊簽證B2. DS-160表上有如下問題：
"Has anyone ever filed an immigrant petetion on your behalf with the United States Citizenship and Immigration Services?"
對這個問題的回答，妹妹的丈夫和孩子應該填YES? 或者NO呢？
-Only your sister needs to say "Yes", and her spouse and kids just say "No".
敬等您的回答，再次感謝！
