綠卡I-864被要求補件 - 移民

大家好，最近我們填寫I-864被要求補件，不是很清楚問題在哪裡，想麻煩各位幫我們解惑，原因如下:

1. Submit a completed and signed Form I-864, Affidavit of Support, from the petitioning sponsor. All pages must be present and of the latest edition date.
2. Provide the petitioning sponsor's Social Security Number on Form I-864.
3. Provide a complete and correctly calculated household size for the petitioning sponsor on Form I-864.
4. Submit a complete copy of the petitioning sponsor’s Federal income tax return, including all supporting tax documents (W-2s, 1099s, Form 2555, and tax schedules) filed with the return, for the most recent tax year.

填household number的時候我們填了2，但多年以前我太太有幫她父母和弟弟申請過綠卡，她父母的申請已經取消，弟弟的還無消無息，在想這種情況household number是不是其實是3？文件我們附上的是太太最近三年的W2和1040，想請問各位這樣是不是足夠了，三年都有超過貧窮線，謝謝各位指教

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