James B. Comey, the former F.B.I. director, spoke with me for Friday’s episode of “The Daily,” as he wraps up a publicity tour for his book, “A Higher Loyalty.” Our conversation focused on his decision, before his firing, to document his interactions with President Trump in a series of memos — and to eventually share the contents of one of those memos with a journalist, in the hopes of pressuring the Justice Department to appoint a special counsel in the Russia investigation.