Judy Woodruff:

We return to our lead story, the fate of Judge Brett Kavanaugh's confirmation.

The FBI has now finished its investigation, and the Senate will decide.

We will hear from senators shortly.

But, first, we want to explore this latest investigation.

Gregory Brower is a former FBI official who served under both former Director James Comey and current Director Christopher Wray. One of the offices he worked in provided legal guidance for FBI background investigations.

Gregory Brower, thank you very much for joining us.

What does it take for a background investigation to be thorough and to be credible?