我現在收到打指紋的信，但是因為家裏的事所以想取消申請，過幾年再申請入籍。
我要寫信到哪個地址？好像網站上是不能取消的。現在我有打指紋信上的 'application support center'地址在本州，
-You had letter reply to the USCIS ASC that you will not attend the biometrics because you have requested withdrawal of the case. Enclose the appointment notice back to the ASC.
還有一個如果request for rescheduling 打指紋，要郵寄的地址在VA。 還有service center 在NBC 沒有地址。
如果我要寫信取消入籍，要用哪個地址？
-Send the withdrwal request to the USCIS address in your N-400 Receipt Notice (i.e. where your case is pending). Indicate your case number in the letter and also enclose the copy of the N-400 Receipt Notice.
寫信取消要寫明理由嗎？-Not need any reason.
寫什麽理由不會在以後的申請不引起麻煩？要在信上寫什麽必要的信息？
uscis收到信後會給回信嗎？-They normally do not respond to you. You may check your case status online or call USCIS some time later.
一般多久給回信？這算denial?-Yes.
過幾年重新申請會有麻煩嗎？-No.
需要告知上次取消的理由嗎？-Just say you withdrew the case.
