summarizing the cases he took to court and explaining which ones he declined to prosecute. barr said in his confirmation hearing he understands the interest in what mueller found. >> i'll make as much information as i can consistent with rules and regulations that are part of the special counsel regulations. >> reporter: those rules don't call for making the report public at all. they say only that the attorney general should notify congress if he blocked anything special counsel want to do. congress said they will insist to see the whole thing. >> we will use whatever compulsion we can and must to make sure that the public gets the full story. >> reporter: democrats might try to force mueller himself to testify about what his investigation concluded. though mueller brought charges against six people connected to the trump campaign none of them were accused of helping russia meddle in the election. among the big questions now did