Senate Judiciary ranking member Dianne Feinstein told reporters that she doesn’t know if the FBI investigation has been expanded to include all of the witnesses that Democrats would like to see.

“We don't know at this point. That’s why we wrote the letter asking for the names of people who would be covered. And of course, it would be given to us on a classified basis but at least we would know” she told reporters.

Feinstein indicated that she's had many women approach her about stories of sexual misconduct and confidentiality, saying, it's "not an easy subject."

"I think the investigation ought to be closely held," she reiterated.

When asked how the American people will have confidence in the investigation if it's not made public, Feinstein said, "Well, let's see... I can't say because I don't know what the investigation will say."

"I believe it's too soon. It's Tuesday and we have to put all the facts together," she said. "I don't take it lightly, so we need to do our due diligence," she said."

Whether the Kavanaugh report will ever seen seen by the public is becoming a key issue. The White House ordered the FBI to do a supplemental background investigation. When the FBI completes its work, it sends what it has collected back to the White House. The White House then adds that information to the nominee's background file, which is then sent to the Senate. Only then can senators see it, and only senators and a limited number of staff have access to it.

In other words, don't expect some big public report. There will likely be efforts to make the information public — especially by whichever side it helps. But it's not a clean process of public release.