An intriguing possibility to replace Comey was discussed by ABC's Jonathan Karl on George Stephanopoulos' "This Week" roundtable:
"[T]he president knows he needs to have somebody that is politically bulletproof. I would not be surprised to see it's somebody who is not [being talked about], somebody like — even like [Comey's predecessor] Robert Mueller, ... who served under Democratic and Republican presidents [Obama and Bush 43], universally respected ... Mike Rogers has some big fans in the West Wing."
"[D]on't rule out Merrick Garland [Obama's failed nominee for Supreme Court], who was floated by Senator Mike Lee [R-Utah]. ... Garland ... could be confirmed 100-0 in the Senate."