A part of the plan?

You first clearly display that normal law agencies cannot be trusted to undertake their duties effectively and without prejudice and line up Martial Law.

The other aspect is that by slow walking everything, Wray is keeping this information out of the hands of the Dems and not allowing them to twist and organise their defences.

I also would not be surprised to find out that Barr has been sitting on a lot of cases to keep them out of the hands of the holdovers who would/could easily sabotage any such cases being prosecuted successfully.

Military Tribunals are then fully justified.