Purposes of Sex Offender Registration and Notification. Enhancing Community SafetyPublic Awareness of RiskAssisting Law Enforcement. Before SORNA. Pre 1994: Few states required convicted sex offenders to register addresses with local law enforcement. 1994: Wetterling Crimes Against Children and Sexually Violent Offender Act Set standards for the implementation of state-level a sex offender registration program. 1996: Megan\'s Law amendment .