What illegal FISA warrant in regards to Flynn?I think you're a little behind the times. Flynn is well past the "indictment" phase - he's already plead guilty.
That's why they're talking about sentencing.
What happens if the guilty plea is not accepted by the judge because of some misconduct by the FBI brought out in the FISA memo?
It was already accepted.
What "misconduct" do you believe occurred?
Illegal FISA warrant.
Judges can change their mind if there is new evidence.
Several people have been claiming that there was no warrant for Flynn. Without a warrant, nothing is admissible. So there must have been a FISA warrant for Flynn, right?
None of us know the specifics. Some of us have been speculating that there might not have been a warrant for Flynn - which would not preclude evidence gathered during the surveillance of someone one that Flynn was incidentally caught up in.