Mueller’s investment has been going for ten months, and was a continuation of a long previous FBI investigation before that. How long should it continue? If you think it should continue please provide the criteria we should use to determine when it should end.
I have nothing to add to the answers to your question others have already given. For the record, the investigation should end when Mueller is satisfied and ready to bring his final charges..
Of course, this matter just keeps getting bigger and bigger, so who knows when that will be. Suddenly, just when Mueller was ready to interview the kingpin, which is usually a sign that the investigation is coming to a conclusion, the assumption being that Mueller's questions to Trump will not be for information, but to see if Trump lies or omits information - up jumps the Cambridge Analytica matter. That probably extends the investigation another month.
And while that is going on, who knows what fresh areas of interest will reveal themselves and need to be looked into.
Do you disagree with the above? If so, when do you think the investigation should end, and why?