H. Rept. 117-280: Homicide Victims' Families' Rights Act of 2021, Report to Accompany H.R. 3359, March 28, 2022 [open pdf - 277KB]
From the Purpose and Summary: "H.R. 3359, the 'Homicide Victims' Families' Rights Act of 2021,' would grant relatives of homicide victims, under federal law, the right to have their loved ones' case files reviewed by the federal law enforcement agency with jurisdiction over their case, after three years of the case going cold."
H. Rept. 117-280; House Report 117-280
U.S. Government Publishing Office: http://www.gpo.gov/