ehrlichman? a friend of bob halderman, ucla, not exactly a policy wonk, a seattle attorney, not that well connected. why john ehrlichman? he's not that well connected. >> from a mental perspective he was a lawyer in seattle, he was a land use attorney so he had sort of a visceral interest in grounding in environmental issues that nixon just didn't have, so he bought a certain expertise he was able to apply, cared about the stuff far more than nixon did. >> i think the other part of that is a version of he was there at the time and nixon trusted him. at the beginning of the nixon administration, there were the two ideologically contentious advisers of arthur burns who was about to go off to another appointment and daniel patrick moynihan to handle the urban affairs council. and nixon after a time got quite ex hawesed, if you will, by the continual disputes among those two people. that wasn't the way he wanted to have a white house run. he also didn't care that much personally about domestic policy