This bill establishes the National Police Misuse of Force Investigation Board as an independent federal entity. Its core mission is to investigate incidents involving deaths in police custody, officer-involved shootings, and uses of force resulting in severe bodily injury. The Board will comprise eight members appointed by the President with Senate consent, ensuring a diverse range of expertise, including civil rights law and conflict mitigation. The Board is mandated to create specialized offices to conduct these investigations, with reports detailing demographics, circumstances, and outcomes of each incident. For complex cases involving substantial questions of excessive force or racial injustice, the Board can establish special boards of inquiry. These inquiries will have the same investigative authority as the main Board, including the power to subpoena witnesses and evidence. A key function of the Board is to issue periodic reports and recommendations aimed at reducing such incidents and proposing reforms to police procedures, laws, or equipment. Recipients of these recommendations, including state and local governments, must provide formal responses within 90 days, outlining their plans for adoption or reasons for refusal. The Department of Justice Civil Rights Division can initiate "Pattern-or-Practice Investigations" if recommendations are not implemented, potentially leading to direct enforcement actions. To ensure accountability, states and local governments receiving certain federal grants must conform their laws to allow Board findings to be admissible in court. Failure to comply with these requirements, including annual reporting on actions taken in response to recommendations, can result in a 1% to 10% reduction in federal grant funds. The bill also mandates the Board to provide assistance to civilians and their families affected by incidents, including mental health services and private briefings on investigation findings. The Board's operations are subject to oversight by the Department of Justice Inspector General for financial management and an annual audit by the Comptroller General. An annual report to Congress will detail investigations, recommendations, and responses. This comprehensive framework aims to enhance transparency, accountability, and reform in law enforcement's use of force.