Two Times reporters who wrote the book said they corroborated a prior claim of sexual misconduct against Kavanaugh. They also concluded the FBI interviewed none of the potential witnesses, throwing new scrutiny on White House officials and Republicans who strong armed his confirmation last year.

The book also contains a former male classmate’s new allegation that the authors say was corroborated by two sources. The authors reported the former classmate came forward to the FBI and senators concerning an incident he witnessed and said the FBI did not investigate the claim.

…In practice, there is a minuscule chance that Kavanaugh would be convicted of any impeachment charges brought by the Democratic House, given the need for a two-thirds majority in the Republican-held Senate.
Brett Kavanaugh: New claims detonate in heat of 2020 election – CNNPolitics

hmmmmm