Once again, you show no knowledge of how the DoJ works.
Garland’s job is largely policy oriented.
The J6 investigations are being run by the US Atty for DC and other DoJ lawyers.
Several grand juries are actively working on the J6 cases, including Trump’s involvement.
Like all Grand juries, their deliberations are secret.
No DoJ memorandum from the '70s has anything to do with the J6 investigations.
Your continued refusal to understand how these thing are done doesn’t speak well of your intellectual abilities—but your whining and carping certainly tells us that you’re still pissed that you didn’t get that unicorn for your birthday.