if michael cohen just says, i did this all by myself. there has to be somebody else involved. now who that person is up to conjecture but somebody needs to be very worried right now. >> we don't know specifically what was changed, what if the statement that was already there was false to begin with, what does that do for michael cohen? >> yeah. one of the key legal issues is what we call materiality, was the change something that mattered or was it something peripheral, were they tweaking the grammar or syntax. if it was changed from something that was true to something that was false back to january, that's exactly what michael cohen pled guilty to lying about. if somebody else scratched out that date and made it earlier, that's big trouble. >> it'll be interesting to see as we learn more about that. we will continue to follow that as we learn more from capitol hill throughout the day as well. i also want to bring in another voice here to talk about the other legal issues we're looking at today. bradley moss specializes in security clearance law and we brought you in specifically,