Mr York got one thing badly wrong. The investigation is very much about collusion. Comey emphasized that, and the extreme seriousness, many times. When pressed to minimize the severity of the collusion, he flat refused, but every time said he could not speak of the collusion in open session. 

For example:

Mr Yourk gets one thing badly wrong. Comey repeatedly stressed the collusion but stated he could not discuss in in open session. He made clear that the collusion was and is not only a focus but a huge crisis for the country.

Here is Cotton walking into it:

"COTTON: Let's turn our attention to the underlying activity at issue here. Russia's hacking of those e-mails and the allegation of collusion. Do you think Donald Trump colluded with Russia?
COMEY: That's a question I don't think I should answer in an open setting. As I said, when I left, we did not have an investigation focused on President Trump. But that's a question that will be answered by the investigation, I think."