Jake Tapper has taken a lot of heat for doing some shameless self-promotion on CNN, and his past behavior led to one famous friend cutting ties with him.

A book the CNN host co-wrote has received positive reviews and appears to be a sales hit. But it has also generated intense scrutiny of him and his work.

CNN's Jake Tapper has a history of shady behavior and the tactics he's using to promote his book about Joe Biden are only making his reputation worse.