Sadly there is no reason that pressure should need to be applied to the DOJ, they should already be investigating, that is if they weren’t so busy trying to cover up the past!
I certainly hope that President Trump in his second term learns how to hire and set goals for department heads.
Christopher Wray's FBI should be and should have been all over this. By now, the FBI should have provided Barr's DOJ with all the information it needs for indictments. I put the blame for the lack of action here on Wray. He can be told to investigate, but he should have been all over it for months.