So, there is this…
“Toomin’s ruling also allows the special prosecutor to delve into Foxx’s own handling of the case, meaning that Foxx and her people may also be questioned, under oath.”
https://www.chicagotribune.com/columns/john-kass/ct-jussie-smollett-special-prosecutor-kim-foxx-kass-20190621-5sxrf5ez75hvxbigzbo6qxoj3u-story.html