They will probably conclude that Martha Stewart is Ms. Big behind the whole scam.

The article says there have been 26 investigations over the past year. How many successful prosecutions? I doubt that the FBI will have the ability to get very far with this since these companies under investigation will have used much legal advice to ensure what they did was not going to send them to jail. It might not have been right but was almost certainly legal.

The "independent" rating agencies will have provided valuations and so it will be difficult to prove they have misrepresented their assets.