This project examined practices and initiatives undertaken by prosecutors across the United States to address trafficking in persons (TIP) in order to learn about TIP case identification and case building; when jurisdictions prosecute utilizing their state's TIP statute or alternative charges; and how prosecutors approach victim identification, serving victims, and increasing convictions and penalties for traffickers and buyers. It also sought to draw lessons learned that other jurisdictions can use to begin this work or increase their capacity and effectiveness, regardless of size or location. This project was a partnership between the Justice Research and Statistics Association (JRSA) and the National District Attorney's Association (NDAA) and consisted of two phases. Phase I was a national survey of prosecutors and Phase II was a series of four case studies in jurisdictions undertaking anti-TIP initiatives. The results of the survey are intended to provide a national snapshot of trends in local TIP prosecutions and the use of state-level TIP statutes by local prosecutors. It serves as a ten-year update to, and expansion of, previous research on local prosecutorial approaches to trafficking that had used data on cases prosecuted through 2008.