By the Constitution: the president nominates, and the Senate advises and consents candidates to the Supreme Court. The “consent” process shouldn't be considered a social gathering — but should be an in-depth fact-finding hearing — especially since considering a lifetime appointment.
The Senate’s sub-committee in the recent “consent” hearing was unable to reach a consensus, thus the Senate requested of the president an FBI investigation. He concurred, but limited the investigation to one week and to exclude the principal characters from investigation.
For such a controversial hearing, I consider the investigation woefully lacking. I believe the swamp waters drowned the hearing, the Senate acted as puppet to the president, and the wrong group is being held accountable.