What are some of your proudest recent achievements? The achievements I am proudest of trace the arc of how thinking about crime and safety has evolved over the past thirty years. First, I am proud of path-breaking work that my colleagues and I in the U.S. Attorney's office did in the early 1990s when murders reached an all-time high in New York City. Thinking through how the federal government had mobilized federal law to break the grip of La Cosa Nostra, we similarly began to build, painstakingly, cases against the groups that were holding neighborhoods hostage with violence. These groups also had complex histories and relationships, although law enforcement had not looked at them in an organized and concentrated way. Over a period of four years, the office charged over 200 murders that had been unsolved.