That a white house employee or a former white house employee has total immunity from testifying or appearing before congress. that pushes the outer limit further than i have ever seen it pushed. i think this is a smokescreen at this point and i hope that the committee will pierce it because i think it's important. >> in an effort to discredit that witness, john dean, republicans today in today's hearing accused dean of profiting from his place in history. here is part of an exchange with congressman matt gates. >> how many american presidents have you accused of being richard nixon? >> i actua...