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我是美國公民，現在給父母申請移民。但我自己無收入，和老公聯合報稅。老公和妹妹同意提供經濟擔保，但他們不是公民，我864表裏 page 4 of 10 income you are using from any other person who was counted in your household size... 我要填上我老公和我妹妹兩個人的信息，是嗎？
-Your sister is not counted into your family member (household size), but your spouse is.

然後他們兩個人各填一張864A，是嗎？  謝謝。
-If your spouse has enough income, you don't need your sister's sponsor. If you need both your spouse and your sister's support, then you need to file I-864 and your spouse files I-864A as your household member, and your sister files another I-864 as joint sponsor.

By the way, your spouse and your sister must be green card holders.