Polygraph Video News Today

>> reporter: american media denies it buried the story to help donald trump. and while mcdougals diary was recently excerpted in the new yorker story, american media says mcdougal did not have enough evidence to back up her story. now, we spoke to mr. avenati about why he paid $25,000 for that polygraph video. he told us he did so to ensure that it would be maintained and kept safely during the litigation, making sure that the video, which is also a file, would not be destroyed or tampered with,...