4. "Walker maintains he knew nothing of this work on his behalf."
That is just not credible. And if he did not know he should have. He was supervising these people. This is akin to management claiming not to know about sexual harassment taking place in the workplace. Sorry but that does not get you off the hook.
"The biggest problem with the denizens of bullshit mountain is they act like their shit don't stink." - Jon Stewart