This article already detailed the investigation. https://www.nytimes.com/2018/10/05/u...naugh-fbi.html
For Ford: They interviewed two highschool friends of Kavanaugh from his Calendar and one lawyer of one of his friends.
For Ramirez: They interviewed three people who might have known about the incident.
For funsies: They assembled something from the mailbag.
They then summarized these things and presented them to the Senate in a report.
I have to say, the FBI might not love Trump (because he doesn't love them back) but undercutting rape victims and propping up rich white men would be very old hat for the FBI.
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