Some thoughts on Robert Mueller’s reluctance to testify because he says everything he had to say is in his report:
When I wrote my PhD thesis, I still had to mount an oral defense and undergo some rather rigorous questioning by my committee. It wasn’t a pro forma event; I had to defend my sources, research methods, and conclusions, and it lasted over two hours. I passed, but it was not a foregone conclusion, and I know some candidates who had to go back and basically re-write their thesis.
I don’t know if they have the same sort of exam in law school to get the degree, but someone as smart and insightful as Robert Mueller should know he couldn’t just lay this report on us and walk away.