had very heated exchange with senator richard blumenthal. blumenthal said barr has become, quote the designated fall guy for the mueller report. and in a searing response, barr responded and accused congress instead using the doj to score political punches against the white house. >> we're not in the business of exoneration. we're not in the business of proving they didn't violate the law. but you -- >> i didn't exonerate. said that we did not believe there was sufficient evidence to establish an obstruction offense which is the job of the justice department. and the job of the justice department is now over. that determines whether or not there is a crime. the report is now in the hands of the american people. everyone can decide for themselves. there is an election in 18 months. that is very democratic process. but we're out of it. we have to stop using the criminal justice process as a political weapon. reporter: attorney general barr also said that he himself was surprised that...