99% of the blame is on Merrick Garland.
He seems to have the right temperament to be a judge and would have likely made a good SC Justice but he was absolutely the wrong guy to be AG or any top prosecutor.
He was the most political person possible in that job, ironic as i think be believed he would be perceived as not political by not immediately prosecuting Trump.
But one day after being sworn in to office he should have been on TV announcing he was putting multiple Special Prosecutors to investigate each elements of Trumps crimes. He had both the House and Senate Leaders saying at the point that Donald Trump was responsible and should be held to account and Trump had not yet rallied any allies.
A Special Counsel for :
- HIs Fake Electors/Election interference scheme, State by State
- another for the Jan 6th riot coordination, from Roger Stone to others
- The stolen Documents, Top secret and classified
- other...
Even with a full 4 years many of those would have struggled to get thru the courts before the next election and Garland knows that, so that is why it was his biggest failing.
