years ago. it's not clear what mueller wants to bring to him under the circumstance. so you could very easily have a situation in which whitaker isn't being asked to do anything wrong and isn't trying to do anything wrong. but in order to steer around him, in order to protect the investigation, mueller is waiting to see how this turns out before he moves forward with things that would require his approval. even his mere presence could be having a chilling effect on the investigation. >> i want to get your thoughts on climate change. the report released by the trump administration last friday, the report warns of devastating effects from climate change. president trump suggested that he doesn't believe it, what's your response to the president? >> look, the climate den eyewitness newsing that the foss -- denying that the fossils fuel runs has a moment here. a devastating climate report by all the best scientists came out