The FBI hasnt interviewed Supreme Court nominee Brett Kavanaugh or Christine Blasey Ford because it doesnt have clear authority from the White House to do so, according to two people with knowledge of the matter.
FBI Director Christopher Wray is documenting whats happening behind the scenes in order to help ensure the bureaus activities in the politically charged investigation are captured and perhaps made public one day, the person said.
IMHO that seems to make sense.
The accuser and accused have stated their positions under oath.
It wouldn't be in their interest to state anything different to the FBI now.
It is the statements of others and any pertinent facts the FBI uncovers that will confirm or refute their stated positions.
And that is what will impact their credibility and should be of interest to undecided senators (if there really are any).