So the D.C. Circuit has decided that a court cannot, on its own, look into the government's motives for dropping an investigation. All the more reason for Congress to investigate -- they are the guardians of the of the judicial process, as I explain here https://www.politico.com/magazine/story/2019/04/09/congress-mueller-report-226580

Also, note what Barr is establishing as a substantive matter -- that there is no counterintelligence purpose for the FBI to inquire about contacts between campaigns and hostile foreign powers. He's creating a vacuum for Trump's campaign to do 2016 reprise, w FBI off limits

Finally, I've said it before and I will say it again: It ENTIRELY defeats the purpose of the Special Counsel regulations -- which are meant to insulate an investigation -- if the AG can just unravel its work. Barr had the option to object when the Report was submitted. He didn't.