1) Barr has removed any doubt remaining that he is nothing but Trump's Roy Cohn.
2) Mueller clearly stated that he adhered to DOJ guidelines that a sitting President cannot be indicted.
3) In light of 2) above, Mueller clearly stated that was the guiding principle regarding obstruction of justice.
4) In light of 2) and 3) above, Mueller stated that he concluded based upon the evidence that he could not exonerate Trump of obstruction of justice.
5) Based upon 3), 3), 4) above, Mueller stated that the remedy to solve this problem is Congress, which means impeachment hearings to decide if the President abused his powers by attempting to obstruct justice on no less than 10 occasions.
6) To note, that in addition to whitewashing the Mueller report and to running interference for Trump, Barr clearly lied when he stated that standing DOJ guideline regarding not indicting a sitting President DID NOT factor into Mueller's decision, when that clearly was NOT the case.