@metal-brain said
Did Mueller say that himself or is that just pundit opinion?
Mueller rarely says anything in public. But it is a longstanding DOJ policy, which you would know if you read that article or any of the many that describe the policy in detail.
EDIT: Well, a practice:
The IG’s report on the Comey investigation outlines in detail the Justice Department’s practices in heeding sensitivities when deciding about whether and how to take action on an investigation in advance of an election.
“No Department policy contains a specific prohibition on overt investigative steps within a particular period before an election,” the report notes. But the department has “a longstanding unwritten practice to avoid overt law enforcement and prosecutorial activities close to an election, typically within 60 or 90 days of Election Day.” The IG reported that some officials put the time period at 60 days, while others cited a 90-day timeframe.
In each of the past three presidential election years, the sitting attorney general has issued a reminder memorandum, though not for midterms. The memo includes a recommendation that employees consult the department’s Public Integrity Section, known as the PIN, “whenever an employee is `faced with a question regarding the timing of charges or overt investigative steps near the time of a primary or general election,’ without regard to the type or category of crime at issue,” according to the IG’s report.
https://www.justsecurity.org/60981/force-muellers-hand-midterms-exceptions-doj-60-day-rule/