The guy at the local FBI office told me repeatedly and angrily that they don’t investigate document/identity fraud.
The FBI is either totally corrupt or a sad joke.
I have reported the SSR to SS through my congressman, and they did respond. They defend his registration. So I have the record. That way, if it's proved to be fraud in court, I can demand answers as to why they ignored my concerns.
Maybe the FBI needs a “Ticket” before they can investigate. If they choose to drop it, they may need to explain why at a later date.