Some more thoughts ....
Apparently The conversation documented by the memo took place in February this year, and we are only now learning about the memo and Comey’s purported belief that Trump was improperly trying to influence the investigation–a claim that Comey apparently was willing to keep to himself as long as he was retained as FBI Director.
If that was the case, and it looks like it ( otherwise, why wait till now to reveal the memo ?), I see only these possibilities:
1) Comey did not believe Trump was trying to influence the Flynn investigation
or
2) Comey acted improperly by not doing or saying anything about the alleged attempt after it happened. If Trump asked him to do something inappropriate, he should have reported it by informing the Senate Intelligence Committee of Trump’s alleged statement.
The Libs could of course argue that Comey was afraid the details of his conversation with Trump might influence the investigation. If so, Comey should have resigned in protest.
Regardless of what Comey did or did not do, we would end up in the same place that we are at right now. However, Comey would have had the moral high ground and credibility. Yet, he did nothing. WHY?