Establish the sexual and violent offender presentence investigation and reporting unit

SB 89 establishes a dedicated "Sexual and Violent Offender Presentence Investigation and Reporting Unit" within Montana's Department of Corrections to handle investigations for specific offenses. The unit, staffed by probation and parole officers, must complete presentence reports within 30 business days for defendants convicted of sexual offenses (as defined in §46-23-502) or violent offenses (as defined in §46-23-502). This ensures courts receive timely, thorough reports to consider during sentencing for these cases, replacing the previous system where general probation officers handled such investigations. The bill also updates existing law to mandate these investigations and includes related provisions for psychosexual evaluations, with costs typically paid by the defendant.