"Which DOJ policy or principle sets forth a legal standard that an investigated person is not exonerated if their innocence from criminal conduct is not conclusively determined? Where does that language come from, director? Where is the DOJ policy that says that? Let me make it easier, can you give me an example other than Donald Trump where the Justice Department determined that an investigated person was not exonerated because their innocence was not conclusively determined?" he continued.
"I cannot but this is a unique situation," Mueller responded.