out of curiousity, when did RR sign the 4th FISA Warrant? What is the relation to Sessions appointment and/or Recusal? RR was undercutting Trump. When is the key!
First app was October 21, 2016. Renewals each 90 days (max), and likely close to those niney days, so the third renewal would be 270 days (max) from October 21, 2016.
Convert Units sez ... July 18, 2017 (at the latest). I'd guess no more than a couple weeks earlier, at the earliest. Say July 1, 2017. Rosenstein was sworn in on April 26, 2017. Mueller was appointed May 17, 2017.
Nunes Memo transcript - Politico (see page 3)
Sessions was sworn in early February 2017. He recused from investigating the Trump campaign on March 2, 2017.
-- RR was undercutting Trump. --
Or at least enabling the coup attempt to persist. There is a wide range of speculation as to actual plan and actual motive, from white hat to black hat. Trump meets with Mueller, and two or three days later Mueller is appointed SC? What's up with that?