PB&JAM

Google your local congressman by typing in, "find my local congressman". go to their page to find their mailing address.
here is a copy of letter i sent to mine. you can change the letter to best suit your needs/situation.
With your letter, be sure to include a copy of your noa1. (i also printed out the uscis web page of my online status showing the "received and pending" part. thats optional).
(your address here)
(date) 2009
U.S. Representative (congressman name)
(their address here)
To the Honorable (congressman name):
As a law-abiding US citizen, I request your assistance with my USCIS petition. At present, the time frame for reviewing cases is six months or longer. Despite published announcements to the contrary, I have been separated from my fiancé for a painful amount of time. After following the guidelines posted on the USCIS website and paying all applicable fees, my fiancé and I are waiting in suspense for an approval (the Notice of Action 2 – NOA2), and this is the source of our dilemma—an inordinate amount of waiting time and no clear explanations for delays. Hence, I ask you, Honorable U.S. Representative, to investigate this seemingly negligent period of inaction.
The first step is to submit the petition to establish the existence of a relationship. Then, once approved, our petition and all documents submitted are forwarded to the National Visa Center for further processing. As you are aware, the next phase is the embassy approval with required medical examination and an interview. Unfortunately, we have not moved past the first step because there have been no updates sent to us. When an inquiry was made, I received the generic, “We’re within our processing time” and “It’s looking close.”
The entire process thus far has proven to be quite discouraging. I cannot get an accurate, specific response to my inquiry, nor do I receive the “first in, first out” treatment we were promised. Hence, I need and request your assistance. Perhaps an inquiry from you will garner a more substantive, more accurate response. Attached, please find a copy of NOA 1 for our petition (I-129F) and a copy of the USCIS website page showing my status as pending and case last updated (“touched”) over 6 months ago. Below, see our receipt numbers given by USCIS. It is with great respect that I request your inquiry into this matter. Hopefully my fiancé and I will receive our NOA2 and continue positively on the path of reunification.
Respectfully yours,
your name
S.S.N.: (your social security number here)
Receipt Number for Petition: WAC-xxxx-xxxx(your case number)
Beneficiary: (fiance’s name), fiancé
Phone: 123-456-7890 (your number)
Email: xxxxx@yahoo.com (your email)