第一封信：10/2004
第二封信：4/2005
体检：5/2005
刚刚去信查询，今天收到答复：
We have requested background information from other government
offices(s). Unfortunately, we cannot respond to requests for the
status of your application before this information is received.
"background information" 指什么？文科背景也要背景调查吗?还是随机的?
这个时间大概要多长?感谢指教!