I believe this is inaccurate. I believe the David Corn was the first to ask, "[W]here's the investigation?" on July 16, 2003. Do you have evidence that the CIA asked for an investigation before the media asked for it?
I am absolutely sure the CIA asked the justice department.
the request was filed by the CIA on July 30, 2003.
Just do a google search. David Corns article is not a formal request for an investigation. In fact not only did the CIA make a formal request for the investigation. They even said
that if Valeria Plame was not a covert agent there would have been no need for such a request from the justice department.