... reports are surfacing that reveal that Mueller was a no-show and others may have run the investigation and authored the report. According to the New York Times, Mueller, “Kept noticeably shorter hours than he had as FBI Director,” and he “Seemed to cede substantial responsibility to his top deputies, including Aaron Zebley, who managed day-to-day operations.”
Zebley was in private practice in 2015 and 2016, and he represented a man named Justin Cooper. Cooper was an adviser to the Clinton Foundation and an IT expert who set up and maintained Hillary Clinton’s private email server. According to the FBI, “Cooper did recall two instances where he destroyed Clinton’s old mobile devices by breaking them in half or hitting them with a hammer.”
It is becoming clear that the Mueller report is a partisan document, carefully crafted to cut around nefarious activity perpetuated by Clinton et al., and focus on the most salacious moments of the Trump presidency.
I'm not familiar with DoJ internal guidelines, but I find it hard to impossible to believe that the way Team Mueller was staffed did not violate ethical rules/guidelines.