Why does the FBI have to investigate the Christine Blasey Ford claims?

With the claim made by Christine Blasey Ford, why does the FBI have to investigate this and not the police? Is it because Kavanagh is a nominee for the supreme court?
If he was just a 'no one' and she was a 'no one' wouldn't she go to the police?

Who she?

It's not even their jurisdiction.

I'm just wondering how the hell do you investigate a ' suppressed memory ' with no physical evidence.

Thank you for calling the FBI, how can we help?
" Yes, I'd like you to investigate a sexual assault "
Ok Ma'am, when did this happen?
" 35 years ago "
Ok, what date?
" no idea "
Uh. Ok. What location?
" not real sure "
Ok. What CAN you tell us?
" There were either 2 or 4 people in the room "

The local police lack the jurisdiction to subpoena the people involved.

Because you are a Russian troll and you care.

The FBI has nothing to investigate. Ford obviously won't show up on Monday. Dems have failed on this.

The FBI already said they can't investigate it. There was no federal crime.

The statute of limitations has run out, so the police have no jurisdiction. The FBI might be able to shed light on the subject and we certainly need some, one way or the other.

Made up 36 year old lie? LOL

The FBI performs background checks. It's what they do. The last word in FBI is "Investigation" do you know the meaning of that word?