The Hunter Biden investigation collapsed into bitter acrimony, whistleblower testimony reveals - Vox

"But putting these tidbits together, it appears to me that there are the seeds of another story here — one in which the pre-midterms leak destroyed DOJ's trust in the IRS team, and in which, after investigating, they found concerning emails of some unspecified nature. DOJ so far has not commented on why the IRS team was removed..."

https://www.vox.com/2023/6/29/23772637/hunter-biden-whistleblowers-irs-merrick-garland