Former top Mueller prosecutor Andrew Weissmann responds to special counsel's criticism

Andrew Weissmann, who served as a top prosecutor on special counsel Robert Mueller's team, is responding to a rare statement from his old boss criticizing his assessment of the final report on Russian election interference. Weissmann details his experience in the investigation, and explains where he thought Mueller succeeded and fell short, in his book, "Where Law Ends: Inside the Mueller Investigation," and he joined CBSN to discuss.