今天收到了一份信说，
The processiong of you case has been delayed. A check of our records establishes that your case is not yet ready for decision, as the requited investigation into your background remains open.
Until the background investigation is completed, we cannot move forward on uyour case. These background checks are requited to be completed on all applicants who apply for the immigration benefit you are seeking. we will make every effort to make a decision on this cse as soon as the background checks are complete.
以上的信件大家又遇到的吗？要求我们的补充资料是去年9月交上去的，有谁知道还要等多上时间吗？
请问小白兔，我们现在该如何？