Your lawyer is very inexperienced. It is very basic sense that the I-485 applicant (you) have to sign the Form I-485 before it was sent out.
律師說最好能有當天的信用卡purchase記錄,可是那天是星期三,正好沒有用過信用卡,那還有什麽辦法能證明我當天在美國嗎
-For the RFE, if you can find some evidences you were in U.S. (such as 用過信用卡, etc.) 1-3 days before and after the date your I-485 was signed, I think it will be OK. You just find some excuses and explain why you forgot signing this form.
律師說最好能有當天的信用卡purchase記錄,可是那天是星期三,正好沒有用過信用卡,那還有什麽辦法能證明我當天在美國嗎
-For the RFE, if you can find some evidences you were in U.S. (such as 用過信用卡, etc.) 1-3 days before and after the date your I-485 was signed, I think it will be OK. You just find some excuses and explain why you forgot signing this form.