Chair, you intervened in the previous round with very clear expectations about what's supposed to happen.
Mr. Green's question to the witness was very straightforward and the witness is now saying that he gave testimony about something that hadn't happened at the time. When he came before the justice committee, the recording that Mr. Green is referencing hadn't yet been released. Mr. Wernick didn't know he'd been caught.
The expectation of the committee is, of course, as you said, that the witness is going to answer the questions and not simply say, “I've answered that question before.”
However, Chair, for your consideration, of course committee can formally order that the witness answer the questions. If he refuses, then it is a violation of this committee's privilege, which would need to be reported to the House.
I don't think it needs to come to that, but I just think that perhaps one more urging and an opportunity for Mr. Green to restate his question so that we can get an actual answer from the witness....