你可以写封email去NCSCFollowup.nsc@dhs.gov
这比电话讲清楚。个人觉得更有效。I mailed it out on June 1st; then my whole family was approved on June 2nd. The email may play some roles in it.
模版如下：
Dear Sir and Madam,
My name is…… who was born in China’s mainland. I am currently working at …….. (city, state) as a ……(工作title). This is the same university （company） at which I resided when first applying for a green card in …(year). I still pursue the same … area …...
Here is a brief timeline of my application process:
1. Applied NIW (EB-2) [green card 类别] in …(year) with a priority case date of …(具体时间)
2. I-140 approved in …(具体时间)
3. Submitted I-485 to … Service Center (具体center) in …(具体时间)
4. I-485 received on (具体时间)
Receipt numbers:
姓名 LIN number
The cut-off date of the EB-2 (or EB-3) for China’s mainland born is (具体时间), past my priority date. Thus it is to my understanding that my case is up for approval.
After a long-time waiting, we are eager to receive our green cards so that we can ….(一两句话表明希望尽快得到绿卡的原因，象回国探亲啦，去欧洲旅游啦)
I kindly ask for an update on our family’s case and when our green card status will be approved. Please consider this request with my sincere gratitude.
Sincerely,
祝大家万事如意！！！