MS SB2580

Defines "juvenile offender" as a person under 18 years old at the time of the offense and establishes alternative sentencing options for juvenile offenders convicted of capital murder and first-degree murder.

Allows juvenile offenders convicted of capital murder to receive life imprisonment or life imprisonment without parole if a court (sitting without a jury) determines life sentences are justified after a separate sentencing proceeding.

Permits courts to impose sentences of 25-50 years for capital murder and 20-40 years for first-degree murder if the court finds life imprisonment unjustified for juvenile offenders; establishes 15-30 years for second-degree murder.

Prohibits death sentences for defendants under 18 years old at the time of the offense and requires juvenile capital cases be decided by a judge sitting without a jury rather than by jury.

Makes the sentencing provisions apply retroactively to all juvenile offenders regardless of when the offense was committed, arrest made, or conviction entered.