Andrew Weissmann From Wikipedia – Andrew A. Weissmann (born March 17, 1958) is an American attorney. Starting in 2015 he became the chief of the criminal fraud section of the U.S. Department of Justice. In June 2017 he was appointed to a management role on the 2017 special counsel team headed by Robert Mueller. To assume that position, Weissmann took a leave from his Department of Justice post.