"And I have great faith in Bob Mueller, but I just can't tell from the letter why didn't he decide these questions when the entire rationale for a special counsel is to make sure the politicals aren't making the key charging decisions," the former FBI chief said.
"The notion that obstruction cases are somehow undermined by the absence of proof of an underlying crime, that is not my experience in 40 years of doing this nor is it the Department of Justice's tradition. Obstruction crimes matter without regard to what you prove about the underlying crime," Comey said.