It varies from committee to committee, but I've always.... Even when we're interviewing witnesses, I don't ask the witnesses or the committee members to go through the chair. Unless we want to adopt that as a rule of this committee, it hasn't been our past practice
But Mr. Calandra is right that Mr. Adler has no obligation to answer any questions put to him. He can contribute as much or as little as he likes to this committee. He was here as a witness before, and that would have been the time you could have put questions to him and expected an answer.