; and (ii) provides a model set of practices, systems, or procedures that other jurisdictions can adopt to reduce the use of public services by high utilizers. . II Improving research on violence 201. Research with respect to violence (a) In general The Secretary of Health and Human Services, in consultation with the Director of the National Institutes of Health, shall expand and intensify research on self-directed and other-directed violence associated with mental illness and substance abuse disorders. (b) Limitations on authorization of appropriations To carry out subsection (a), there are authorized to be appropriated $100,000, without fiscal year limitation, which is authorized to remain available until expended. III Understanding the epidemic of gun violence 301. National violent death reporting system The Secretary of Health and Human Services, acting through the Director of the Centers for Disease Control and Prevention, shall improve the National Violent Death Reporting System, as authorized by title III of the Public Health Service Act ( 42 U.S.C. 241 et seq.), particularly through the expansion of the application of such system to include the 50 States. Participation in the system by the States shall be voluntary. 302. Reaffirming Centers for Disease Control and Prevention’s authority (a) In general Section 391 of the Public Health Service Act ( 42 U.S.C. 280b ) is amended— (1) in subsection (a)(1), by striking research relating to the causes, mechanisms, prevention, diagnosis, treatment of injuries, and rehabilitation from injuries; and inserting research, including data collection, relating to— (A) the causes, mechanisms, prevention, diagnosis, and treatment of injuries, including with respect to gun violence; and (B) rehabilitation from such injuries;