Not sure it’s been mentioned, but this makes the story a bit more interesting:

Federal prosecutors have issued grand jury subpoenas to associates of former National Security Advisor Michael Flynn seeking business records, as part of the ongoing probe of Russian meddling in last year’s election, according to people familiar with the matter. CNN learned of the subpoenas hours before President Donald Trump fired FBI director James Comey.

I don’t see anyway that this ends without Trump leaving office early.