Senate advances juvenile justice substitute after heated debate over minors and guns

The Missouri Senate took up and perfected a substitute for Senate Bill 888 on the floor Tuesday after several hours of debate over how the state handles serious juvenile offenders and juveniles in possession of handguns.

Sponsor remarks and substitute details
Senator from the second, who moved the substitute to perfection, said the bill makes several procedural changes to juvenile handling: the Missouri juvenile detention assessment form (JDTA) would not be mandatory in detention decisions but, if used, must consider all alleged crimes rather than a single offense. The substitute authorizes prosecutors to move for certification hearings in narrow circumstances — class A or B felonies, violent felonies listed in chapter 566, or when a juvenile commits two felonies within 180 days — and requires juvenile officers to share reports and any JDTA with prosecutors in those cases. The substitute also includes provisions allowing counties to cooperate to build juvenile detention facilities and ties certain elected prosecuting attorneys’ compensation to judicial pay schedules to reflect added duties.

Why it matters
Supporters said the changes respond to uneven implementation of the JDTA across jurisdictions and aim to give prosecutors and juvenile officers clearer responsibilities in the most serious cases. “This bill clarifies that the Missouri juvenile detention assessment form, JDTA, shall not be mandatory when determining whether to detain a criminal youth,” the sponsor said, describing a perceived pattern of under‑detention in some districts that led to repeat serious crimes.

Key contested amendment: minors and handguns
A prominent floor amendment drew the session’s most heated exchanges. The amendment would create a new Class A misdemeanor for unlawful possession of a handgun by a person under 18, with enumerated carve-outs for temporary transfers for target practice or training with prior written parental consent, farm/ranch activities, members of the armed forces acting in the line of duty, and self‑defense in a residence. The amendment’s sponsor argued the change targets the handguns that account for most juvenile violent crime and would help “no guns for kids” enforcement and prosecution.

Opponents raised constitutional and procedural objections. Several senators, citing the legislature’s recent experience with a single‑subject challenge (Senate Bill 22), said adding broad criminal provisions and expanding to "criminal proceedings involving juveniles" risks exceeding the bill’s original title and invites litigation. Senator from Lawrence warned the amendment "could rise to a point of order" and observed that opening chapter 500 could allow unrelated criminal additions by amendment. Concerns were also voiced about the absence of a fiscal note for the compensation changes tied to prosecutors’ pay and about how expanded access to juvenile records — including fingerprinting provisions — would interact with sealed juvenile records.

What passed on the floor
After extended colloquy, the Senate adopted procedural motions to declare the substitute perfected and ordered it printed. Several senators said they remained ready to work on narrower carve‑outs or clarifying language. The sponsor emphasized that the ultimate decision to certify a juvenile as an adult remains with the court; prosecutors may move for a certification hearing but the judge retains the final authority.

Next steps
The perfected substitute will proceed through the legislative process with the substitute language on record. Senators on both sides said they expect follow‑up work on technical clarifications — particularly around compensation language for prosecutors and precise data‑sharing rules — to reduce the risk of legal challenges and address county implementation concerns.