Yes, I think I had heard that before. wtc911 said earlier that Ronald Reagan had travelled to DC with Bogart but I had never heard that. I would be interested to know if that was true.
I hadn't heard that, either, but I'm also interested in more information on that. Bogart did make his trip about the same time Reagan was testifying--the subpoenas Bogart flew out to protest were issued in September 1947, Reagan testified that October.