The bigger issue here is that Dianne Feinstein sat on this letter for 2-3 months and never uttered a peep about it when she was sitting on the Judiciary Committee questioning Kavanaugh directly, but now wants to delay the confirmation vote while an "investigation" is done.
Her ass needs to be dragged in front of this committee so she can be interrogated over her conduct. By definition, this means she must step down from the committee.
If he doesn't, the GOP is kaput.
Feinstein pops this accusation just when it would do the most damage. In this case, it’s just before the vote when Kavanaugh has no time to dispute its allegations. They did this to Roy Moore. Kavanaugh is being victimized by a last minute tactic where there is no time to bring evidence against its accuracy.