Former members of Robert Mueller's special council team are ordered not to testify to Congress by AG Bill Barr. He has no authorization over now private citizens! If you agree you are invited to join Leftists.
Why any private citizen would obey Barr is a mystery to me. He holds no power over a private citizen, so perhaps this is just propaganda for the ignorant base and trump.
Of course he has no right. More lack of the rules of law. They no longer work under the AG; they are citizens.