I'm not so sure. The committee's counsel was owned by Roth, and the committee chairman was following his lead. In congress there are many members who are total lightweights, and both houses are controlled by relatively few members. Questadt had to know Geary had been compromised by the Corleones, and it had to be well known he was a womanizer and that he had unclean hands. It is possible that he would not have known of the perjury trap. When Geary made his speech the chairman seemed more than a little annoyed.