not want to appear in public before the house judiciary committee. so at the moment democrats are settling on another strategy to bring in people with prior knowledge about other criminal aktsz unoffice including what happened in watererigate for president nixon. reporter: with their party divided over impeachment proceedings, democrats began the challenge of spotlighting what s in the mueller report without the key witnesses who have first-hand knowledge. their first witness, former white house counsel, john dean. the last time i appeared before your commit a was july 11, 1974, during the impeachment inquiry of richard nuxen. clearly i m not here today as a fact witness. in many ways the mueller report is to president trump what the so-called watergate road map stated a little differently, special counsel mueller has