我现在收到打指纹的信，但是因为家里的事所以想取消申请，过几年再申请入籍。
我要写信到哪个地址？好像网站上是不能取消的。现在我有打指纹信上的 '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.
还有一个如果request for rescheduling 打指纹，要邮寄的地址在VA。 还有service center 在NBC 没有地址。
如果我要写信取消入籍，要用哪个地址？
-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.
写信取消要写明理由吗？-Not need any reason.
写什么理由不会在以后的申请不引起麻烦？要在信上写什么必要的信息？
uscis收到信后会给回信吗？-They normally do not respond to you. You may check your case status online or call USCIS some time later.
一般多久给回信？这算denial?-Yes.
过几年重新申请会有麻烦吗？-No.
需要告知上次取消的理由吗？-Just say you withdrew the case.
