OPINION
With the passage of Proposition 102, Arizona voters amended the Arizona Constitution to provide for the automatic prosecution of certain juvenile offenders as adults. The amendment, Article IV, Part 2, Section 22, became effective on December 6, 1996. See Ariz. Const. art. IV, part 2, § 22, 1 Arizona Revised Statutes Annotated (“A.R.S.”) (Supp. 1997). This special action poses the question whether subsection 1 of Article IV, Part 2, Section 22 — known as the automatic transfer provisiоn — may be retrospectively or only prospectively applied. 1 We hold that subsection 1 is a prospective enactment, applicable only to crimes or delinquent acts alleged to have occurred after its effective date.
I. PROCEDURAL BACKGROUND
Before the enactment of Proposition 102, the juvenile court had exclusive original jurisdiction over any minor charged with a criminal offense.
See
Ariz. Const. art. VI, § 15; A.R.S. § 8-202 (Supp.1996);
Maricopa County Juvenile Action No. J-84984,
With the enactment of Proposition 102, certain chronic and violent juvenile offenders are no longer subject to the exclusive original jurisdiction of the juvеnile court. Instead, by constitutional mandate, these defendants “shall be prosecuted as adults.” Ariz. Const. art. IV, part 2, § 22(1).
This special action concerns a prosecution initiated after the enactment of Propositiоn 102, but arising out of crimes committed before its enactment. The prosecution, initiated in a criminal division of the superior court, charged Petitioner, a fifteen-year-old minor, as an adult. Petitioner, objecting that the criminal division lacked original jurisdiction, moved to dismiss the prosecution and remand the matter to the juvenile court. He argued that the application of Proposition 102 to his offenses would violate the ex post facto clаuse of the federal and state constitutions. When the superior court denied Petitioner’s motion, he filed this special action. *228 In a prior order, we accepted jurisdiction and granted relief. We explain that ordеr in this opinion.
II. SPECIAL ACTION JURISDICTION
Does Article IV, Part 2, Section 22(1) apply to
prosecutions
initiated after its enactment, regardless of the date of the alleged offense, or only to prosecutions for
offenses
committed after its enactment? Because that question is one of law, of first impression, and оf statewide importance, we grant review.
See State ex rel. Gonzalez v. Superior Court,
We also grant review because Petitioner, whose position is meritorious, lacks an adequate remedy by appeal.
See State v. Duber,
III. EX POST FACTO LAWS
The United States and Arizona Constitutions prohibit ex post facto laws.
See
U.S. Const. art. I, § 9; Ariz. Const. art I, § 10. A state may enact no law “that changes the punishment, and inflicts a greater punishment than the law annexed to the crime, when committed.”
State v. Noble,
When engaging in ex post facto analysis, we first consider whether an enactment is retrospectively applied to the defendant.
See id.
at 174,
The punitive effect of automatic transfer under Proposition 102 is clear; it greatly elevates the minimum punitive exposure of a juvenile subject to its terms. Petitioner’s case illustrates the point. He is charged with sexual assault, sexual conduct with a minor, and child molestation, class 2 dangerous crimes against children. See A.R.S. § 13-1406 (Supp.1996) (amended 1997); A.R.S. § 13-1405 (Supp.1996) (amended 1997); A.R.S. § 13-1410 (Supp.1996); A.R.S. § 13-604.01 (Supp.1996) (amended. 1997). If tried and convicted as an adult, Petitioner would not be eligible for probation. See A.R.S. § 13-604.01(E). If convicted of all charges and sentenced to concurrent terms, he would face a minimum sentence of thirteen yeаrs’ imprisonment. 2
In contrast, if tried as a juvenile and found delinquent on all counts, Petitioner would be eligible for probation. See A.R.S. § 8-241(A)(2) (Supp.1996). And if subjected to confinement at the Arizona Department of Juvenile Corrections (“ADJC”), he could be confined at most until his eighteenth birthday — a period of approximately two and one-half years. See A.R.S. § 8-246(A) (Supp. 1996).
It is, of course, uncertain that the juvenile court, if it exercises transfer discretion in this case, will choose to retain Petitionеr for prosecution as a juvenile. If the juvenile *229 court chooses instead to transfer Petitioner for prosecution as an adult, he will face the same sentencing exposure that he would face if subject to autоmatic transfer for the identical crimes. A retrospective application of Proposition 102, however, would deprive Petitioner of eligibility to be retained in the juvenile court and to receive the lesser punitive consequences applicable there.
It is well-established that a retrospective deprivation of eligibility for a lesser sentence is forbidden under the ex post facto clause.
See Lindsey v. Washington,
The State, emphasizing the procedural aspects of Article IV, Part 2, Section 22(1) — the elimination of a required transfer hearing and the substitution of criminal procedures for juvenile procedures from the outset — attempts to characterize the impact of Article IV, Part 2, Section 22(1) as merely regulatory or procedural. We do not find this аrgument persuasive. Even a “seemingly procedural” law can fall within the ex post facto prohibition if it increases a defendant’s punishment for a crime after its commission.
See Weaver v. Graham,
Nor are we persuaded by the State’s attempt at oral argument to analogize the retrospective application of Proposition 102 to the retrospective application of A.R.S. § 8-241(I), a subject that we discussed in
Maricopa County Juvenile Action No. JV-512016,
The statute ... clearly regulated the imрosition of the juvenile’s punishment by reallocating discretion over length of stay. It did not, however, subject a juvenile to greater punishment — i.e., a greater length of stay — than the juvenile faced before the statute was passed. To the contrary, both before and after passage of A.R.S. § 8-241(1), a juvenile faced the possibility of confinement at an ADJC facility until age eighteen.
Id,
Here, in contrast, the retrospective application of Article IV, Part 2, Section 22(1) would do far more than reallocate discretion over a juvenile’s length of stay. By depriving Petitioner of eligibility for prosecution as a juvenile, it would substantially alter his range of punishment, depriving him of eligibility for prоbation and raising his potential length of confinement from a maximum of two and one-half years in a juvenile setting to a minimum of thirteen years in a prison for adults. This retrospective impact is punitive, not regulatory, and clearly forbidden under the ex post facto clause.
We further reject the State’s argument that, because Proposition 102 “is the Arizona Constitution, it cannot also violate the Arizona Constitution.” This argument not only ignores the supremacy оf the United States Constitution; it also bégs the question of prospective or retrospective application under the Arizona Constitution. Constitutional measures are construed to operate only prospectivеly unless they clearly state a contrary intent.
American Fed’n of Labor
*230
v. American Sash & Door Co.,
IV. CONCLUSION
For the foregoing reasons, we direct the superior court to dismiss this prosecution as an adult criminal matter and remand it to the juvenile court, which may exercise its transfer discretion pursuant to Rule 14, Arizona Rulеs of Procedure for the Juvenile Court.
Notes
. Article IV, Part 2, Section 22(1) provides in pertinent part:
Juveniles 15 years of age or older accused of murder, forcible sexual assault, armed robbery or other violent felony offenses as defined by statute shall be prosecuted as adults. Juveniles 15 years of age or older who are chronic felony offenders as defined by statute shall be prosecuted as adults. Upon conviction all such juveniles shall bе subject to the same laws as adults, except as specifically provided by statute and by article 22, § 16 of this constitution____
. Under the 1996 version of these statutes, the version applicable to Petitioner's charges, Petitioner, if сonvicted as an adult of sexual assault or sexual conduct with a minor, would be subject to a presumptive sentence of twenty years’ imprisonment at the Arizona Department of Corrections ("ADOC"). See A.R.S. § 13-604.01(A). If convicted of child molestation, he would be subject to a presumptive sentence of seventeen years' imprisonment at ADOC. See A.R.S. § 13-604.01(B). The sentencing court would have discretion to increase or decrease either presumptive sentencе by seven years. See A.R.S. § 13-604.01(D). In the event of minimum concurrent sentences. Petitioner would therefore face a prison term of at least thirteen years. Depending on the facts adduced at trial, however, the court might be required to impose consecutive sentences. See A.R.S. § 13-604.01(1).
