The Case Closure and Witness Support Amendment Act of 2025 aims to enhance the support and protection of witnesses in homicide cases within the District of Columbia. The bill establishes a minimum payment of $50,000 for individuals who provide information leading to the adjudication or conviction of homicide offenders. Additionally, it mandates the Mayor to promote available witness assistance resources and prohibits reward payments to law enforcement personnel involved in the criminal justice system.

Furthermore, the bill requires the Comprehensive Homicide Elimination Strategy Task Force to submit a report by December 1, 2025, detailing the District's witness protection and assistance programs, including recommendations for improvement. It also establishes a Witness Protection and Assistance Program to ensure the safety and wellbeing of witnesses and their families, providing various forms of support such as relocation, housing expenses, and mental health services. The Mayor is tasked with administering this program in coordination with relevant law enforcement agencies.