No criminal charges will be filed in Maryland.
No interview of the men who came forward claiming to be the actual perpetrators will be done.
Now, Brett Kavanaugh was subjected to 6 FBI background checks (as I recall the math, although I am open to correction) prior to entering the confirmation hearings. At each level of promotion, he was investigated again, for anything which might be recently or currently compromising. Judges, self evidently, need to be the sorts of people it is difficult or impossible to blackmail, and their finances need to be in order, to make bribery less tempting. The 7th investigation was political and, beginning and ending with the words of someone who hates Trump and conservatives generally, was really quite impossible.
Logically, though, IF it would have made sense to open up a more thorough investigation by the FBI, it also would imply that there would have been enough evidence to open up a criminal investigation. If, on the other hand–as seems likely–there was NOT enough evidence, then an FBI investigation of any length would also not have turned up anything. This is as close to a necessary logical conclusion as you can get outside the realm of pure math.
The whole thing was a charade. It was liars lying. Diane Feinstein knew that Ford’s story would not withstand close scrutiny, or last longer than a week or two. That was why she sprang the whole thing on the Senate at the 11th hour. The hope was to use a media Blitzkrieg to derail Kavanaugh before the facts were out. And it well could have succeeded, if Trump were a different person, or Kavanaugh a different person.
But, again, ask yourself if you want such people making important decisions which will affect your life, and that of your children. Such dishonesty. Such naked cynicism in pursuit of purely partisan advantage. No thought of the US, of our system, of integrity, much less of love, empathy or compassion.