It would be disastrous for a decline to prosecute in an official report to be issued while charges were secretly being planned. Defense would have an easy case.
Uncovering previously unknown info could always lead to charges in the future, noting the 5-year fed statute of limitations.
Thanks, jjotto.
Now I’m wondering what happened with Paul Manafort. Didn’t the DOJ investigate him years before but declined to prosecute, and then changed their mind years later? I don’t know if there was an official report, though.