In re Maurice D., 34 N.E.3d 590

In July 2012 the State filed a juvenile petition alleging Maurice D., then 17, committed criminal sexual abuse by engaging in sexual penetration with D.F., who was 15 at the time; the statute charged applies when the victim is 13–16 and the actor is less than 5 years older.
At a February 2013 bench trial the juvenile court adjudicated respondent delinquent for criminal sexual abuse; the court did not resolve whether the act was voluntary.
In April 2013 respondent received a 12‑month conditional discharge and 30 days in jail (7 days’ credit) and, as a consequence of the adjudication, must register as a sex offender.
On appeal respondent argued (1) prosecuting consensual close‑in‑age minors under an imprisonable misdemeanor statute violates the Eighth Amendment and Illinois proportionate‑penalties clause and (2) it violates substantive due process.
The State raised mootness and standing defenses; the court rejected mootness (because relief could nullify the conviction and remove registration requirement) and found respondent had standing.
The appellate court affirmed, holding that the Eighth Amendment/proportionate penalties challenge did not apply to juvenile wardship proceedings and that the statute survives rational‑basis review under substantive due process precedents.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Mootness of appeal	n/a (respondent sought relief from conviction consequences)	Appeal moot because conditional discharge served	Not moot — vacating conviction could remove sex‑offender registration, so controversy remains
Standing	n/a	Respondent lacks standing because conduct was not "consensual"/normative	Respondent has standing; statute does not require proof of force, so he is within the injured class
Eighth Amendment / proportionate penalties	Prosecuting consensual close‑in‑age minors to an imprisonable misdemeanor is cruel/unusual and disproportionate	Juvenile adjudication is protective/rehabilitative, not punitive; the clauses do not apply	Clauses do not apply in juvenile wardship proceedings (followed In re Rodney H.)
Substantive due process	Statute irrationally stigmatizes normal teenage behavior; penalties (including registration) are excessive	Legislature reasonably chose to protect 13–16 year‑olds from premature sexual experiences; registration rationally relates to public protection	Survives rational‑basis review; statute rationally furthers protection of minors; prior precedents (Reed, In re T.W., In re J.W.) control

In re Rodney H., 223 Ill. 2d 510 (Illinois Supreme Court) (juvenile wardship proceedings are rehabilitative/protective and Eighth Amendment/proportionate‑penalties clause inapplicable)
People v. Reed, 148 Ill. 2d 1 (Illinois Supreme Court) (legislative purpose to protect 13–16 year‑olds from premature sexual experiences)
In re T.W., 291 Ill. App. 3d 955 (affirming rational basis of statutory protection for minors against premature sexual activity)
In re J.W., 204 Ill. 2d 50 (Illinois Supreme Court) (juvenile sex‑offender registration bears rational relationship to public protection)