In CBS Interview:

https://www.cbsnews.com/news/william-barr-interview-full-transcript-cbs-this-morning-jan-crawford-exclusive-2019-05-31/

BARR, philosopher:

"And as I say, that's antithetical to the way the department runs [to do things according to politics rather than facts and law] and any attorney general in this period is going to end up losing a lot of political capital and I realize that and that is one of the reasons that I ultimately was persuaded that I should take it on because I think at my stage in life it really doesn't make any difference."