This e-supplement is a companion to our report titled, Sex Offender Registration and Notification Act: Jurisdictions Face Challenges to Implementing the Act, and Stakeholders Report Positive and Negative Effects (GAO-13-211). The purpose of this e-supplement is to provide information from GAO's Web-based survey of state sex offender registration and notification offices about their efforts to implement the Sex Offender Registration and Notification Act (SORNA), challenges associated with doing so, and perspectives on the effects of the law in their jurisdictions.