This policy brief provides an overview of successful collaborations that lead to improved access to U visa certification for immigrant crime victims. A review of the experiences reported by grantee organizations of the Legal Assistance for Victims (LAV) Program, administered by the Office on Violence Against Women (OVW) found that successful collaborations with law enforcement agencies that grantees built over time, working on a range of domestic violence and sexual assault issue, led to more positive outcomes for immigrant survivors seeking U visa collaborations. This policy brief contains illustrations and recommendations for best practices for building sustainable collaborations that benefit law enforcement, immigrant victims, advocates, attorneys and the communities.