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House Intelligence Committee Chairman Adam Schiff, D-Calif., arrives for a Democratic Caucus meeting in Washington back in March. Adam Schiff, the focus of Republicans' post-Mueller ire, says Mueller's conclusion would not affect his own committee's counterintelligence probes. ( AP Photo/J. Scott Applewhite) As both the special counsel and the Department of Justice have recognized, the Congress has a vital constitutional role in evaluating misconduct by the executive branch, including the president, and to assess and refine laws that address the sweeping and systematic invasion of our democracy by Russia, we therefore need these materials in order to do our job.