When Sessions was growing up in Alabama, the Democratic Party ran the State, and had corrupted the Government office holders to serve the interests of the Party. The KKK served as the feared terrorist arm of the Democratic Party. They were viewed as beyond the law, because corrupt local law enforcement, judges and politicians within the Democratic Party would (an did) cover up for them.
When Sessions became a prosecutor in Alabama, he continued to pursue a murder investigation into the second in command of the Alabama Klan (Henry Hays), after the FBI gave up on their investigation. His low-profile but relentless pursuit, and his innovative approach produced a conviction - and the death penalty. This trial was the basis used in civil proceedings to bankrupt the Alabama Klan.
When Sessions was later elected as State Attorney General, he followed up on the case, and saw to it that the sentence was carried out - execution in the electric chair on June 6, 1997. It was the only execution of a KKK member during the 20th century for the murder of an African-American.
Sessions was famously low profile during the investigation, which led to the nickname he earned - the Silent Executioner.
As Congress and many in the public were clamoring for action on Obama-era scandals, Sessions revealed nothing. We now know that he had investigations underway. Federal Prosecutor John Huber (a straight-laced Mormon, whose motto is "Be the hammer, not the nail") was assigned sometime before 13 November 2017, possibly in August. Sara Carter reported that the DOJ IG has already referred criminal charges, presumably to Huber. In Session's recent response to Congress, he used the plural, when stating that prosecutors had been assigned. Sara Carter has also reported that at least five FBI field offices are working related investigations.
There is a storm coming.