So what is AG Barr going to do about it?
Nothing. Congress is a go equal branch of Govt. Since the “impeachment inquiry” has no legal standing there is nothing that can be legally charges as “perjury”. This “trail” basically is pr stunt where the Democrats can simply make up any rules they want.
Where the rubber hits the road is in the US Senate. Not going to have their corrupt House “rules” to hide behind there.