Lazer,
This is the link
http://boards.immigrationportal.com...81&page=1&pp=15
It is huge. Take time to read it. It contains every step you need to take to sue them.
I still recommend you consult your attorney to see whether you should file and where you can file it. You can either file it in Lincoln, NE or the place you live. Immigration litigation attorney will tell you how good the chance is. I hope you are not living in Washington, D.C. I heard too many stories about that damn federal district court is tough.....
Basically go to the district court and ask to speak someone for suing U.S. government Pro Se. You need to prepare your case, plus cover page (for filing purpose). After it is done, go to court and file it (pay the fee, of course). You will receive via mail the court copy (it has court's stamp) shortly. As soon as you receive it, serve papers to the defendants. Mail the copy to all defendants via certified mail with return receipt. They ask you mail to some address of general counsel if you sue for immigration purpose, do not forget to sent it to your district U.S. attorney's office. Once you have your receipt for U.S. attorney, file "acknowledgement of serving defendants" to the court, basically telling them all defendants got informed by your lawsuit. You have to wait 60 days. If you are curious within the 60 days, call district attorney's office (civil division) and ask to speak the one assigned to handle your case. Most likely, he/she is going to tell you: I am trying to ask them to speed up your security check. That is usually where the problem is. Make sure you don't have any loose ends, though.
Because in some cases, they got many information from CIA/FBI, and needs to analyze it. If so, district attorney is going to tell you: We haven't obtained all the info needed to adjudicate your case... But for most of them, it is just buried in the name check process, and suing them is the only quick way to resolve it.
In the case we filed last year, essentially we told the court that since May 2005, with cap eliminated and lawsuit settled, they still did not behave and approve the case in the reasonable amount of time. We cited a court precedent that "only because the delay is not unusual does not make it reasonable." It is decided by another court that just because they f*cked up with everybody, does not make them right. You have every right to ask judicial review.
Best place to sue them: California, Boston, New York, Florida
Worst place to sue them: D.C., Texas, Seattle, Louisiana
Good luck.