To the surprise of nobody, it looks like Bar was covering up the Hunter Biden investigation.
https://www.wsj.com/articles/barr-kept-biden-probes-from-public-to-avoid-election-politics-11607951984
Honestly? I suspect they are lying.
Because they would have to be the biggest idiots on the planet if they were real and they didn't make copies of them before sending the things in the mail.