former watergate prosecutor nick acker man.ank you for having me. >> this is a part of your investigation that didn't get a lot of attention over the years because of all the other things that brought nixon down. but what did you find specifically on his taxes? >> well, i think what we found here, the critical piece, was that he back-dated a deed. he had a deed back-dated to make it look as though he had provided this contribution of papers prior to the passage of the tax reform act in 1969. all presidents from harry truman up had taken advantage of the fact that you could deduct a gift of papers. and what he did differently was, in 1969 congress changed that law, and not only did he back-date the deed, but he also lobbied pretty heavily to try and keep the law the way it was so he could continue to take that tax deduction. >> you were a prosecutor looking into this. how did you get on this info? >> well, i think it came out first because the general services administration had found that there was something funny about the dee