Here is the sample that i used.
Respected Senator,
I am requesting you to help me with my I485 case at BSCIS -Vermont Service center.
Please find below the details of my case –
Receipt # :- EAC-xx-xxx-xx782 Alien # :- Axx xxx xxx
BSCIS (Vermont) is currently processing cases for Receipt Date of October 22, 2003, and mine is 10 months older than the current processing date. Find attached the response you got from BSCIS about priority dates. However, the reason they have given (my priority date 2/14/2002 and BSCIS processing dates upto 1/1/2002) does not hold good anymore as the BSCIS is now processing cases upto 3/1/2002. I am attaching details from USCIS website. Here is the URLhttp://travel.state.gov/visa/frvi/bulletin/bulletin_2111.html
Please help me.
Thanks,
Liveandletlive