OPINION
Michael Brown Noble and Lawrence R. McCuin were separately convicted of various sex offenses. We consolidated their cases for argument and granted review to determine whether the statute requiring them to register as sex offenders violates the ex post facto clause of the United States and Arizona Constitutions when applied to offenses committed before its enactment. We have jurisdiction pursuant to article 6, § 5(3) of the Arizona Constitution and A.R.S. § 12-120.24.
FACTS AND PROCEDURAL HISTORY
Noble pleaded guilty in 1988 to charges of child molestation and sexual conduct with a minor. The crimes were committed in 1981 and 1982. He was sentenced to consecutive aggravated terms of eleven years on the first count and twelve years on the second count. In addition, the trial judge ordered him to register as a sex offender, pursuant to A.R.S. § 13-3821,
1
*173
which became effective on July 27, 1983.
2
The court of appeals held that the application of the registration requirement to crimes predating its enactment violates the
ex post facto
clause of the Arizona Constitution.
State v. Noble,
McCuin pleaded guilty in 1988 to two counts of sexual conduct with a minor for conduct occurring in 1981. He was sentenced to an aggravated term of fourteen years on one count, and received a suspended sentence and a concurrent probationary term of seven years on the other count. As a term of his probation, the court required him to register as a sex offender under § 13-3821. On appeal, a different panel of the court of appeals held, with one judge dissenting, that requiring McCuin to register as a sex offender for offenses committed before the enactment of § 13-3821 did not violate the
ex post facto
clause.
State v. McCuin,
DISCUSSION
Noble and McCuin both claim that requiring them to register as sex offenders under a statute that had not yet been enacted at the time they committed their offenses violates the prohibition against ex post facto laws of both the Arizona and federal constitutions.
The
ex post facto
clause of the Arizona Constitution is similar to that found in the United States Constitution.
3
State v. Yellowmexican,
A. The Calder Categories
In Calder v. Bull, the United States Supreme Court held that the ex post facto clause prohibited
1st. Every law that makes an action done before the passing of the law, and which was innocent when done, criminal; and punishes such action. 2d. Every law that aggravates a crime, or makes it greater than it was, when committed. 3d. Every law that changes the punishment, and inflicts a greater punishment than the law annexed to the crime, when committed. 4th. Every law that alters the legal rules of evidence, and receives less or different testimony than the law required at the time *174 of the commission of the offence, in order to convict the offender.
[t]he constitutional prohibition and the judicial interpretation of it rest upon the notion that laws, whatever their form, which purport to make innocent acts criminal after the event, or to aggravate an offense, are harsh and oppressive, and that the criminal quality attributable to an act, either by the legal definition of the offense or by the nature or amount of the punishment imposed for its commission, should not be altered by legislative enactment, after the fact, to the disadvantage of the accused.
In other cases, the Court has suggested that the ex post facto clause prohibited a broader range of statutory application. In one case, for example, the Court expressed the view that the Calder categories are not exclusive, quoting a jury instruction providing that “an ex post facto law is one which, in its operation, makes that criminal which was not so at the time the action was performed, or which increases the punishment, or, in short, which, in relation to the offense or its consequences, alters the situation of a party to his disadvantage.” Kring v. Missouri,107 U.S. 221 , 228-29,2 S.Ct. 443 , 449,27 L.Ed. 506 (1883) (quoting United States v. Hall,26 F.Cas. 84 , 86 (C.C.D.Pa.1809) (No. 15,285), aff'd, 10 U.S. (6 Crunch) 171,3 L.Ed. 189 (1810)).
The Court put any doubt regarding the exclusivity of the
Calder
categories to rest when it expressly overruled
Kring. Collins v. Youngblood,
[t]he holding in Kring can only be justified if the Ex Post Facto Clause is thought to include not merely the Calder categories, but any change which “alters the situation of a party to his disadvantage.” We think such a reading of the Clause departs from the meaning of the Clause as it was understood at the time of the adoption of the Constitution, and is not supported by later cases.
Id. (emphasis added). We therefore confine our analysis to the Calder categories.
Only one
Calder
category is relevant to the instant case. The application of § 13-3821 to Noble and McCuin violates the
ex post facto
clause only if it is a “law that changes the punishment, and inflicts a greater punishment than the law annexed to the crime, when committed.”
Calder,
As a threshold matter, we must determine whether the statute is retrospectively applied to Noble and McCuin. “A law is retrospective if it ‘changes the legal consequences of acts completed before its effective date.’”
Miller v. Florida,
Nor is there any question that, by burdening Noble and McCuin with the registration requirement, the retrospective application of the statute altered the situation to their disadvantage.
Compare Miller,
Accordingly, the sole question we must decide is whether registration under § 13-3821 constitutes punishment.
B. Is the Registration Requirement Punishment?
To determine whether the registration requirement is punitive or regulatory, we look first to “whether the legislative aim was to punish [an] individual for past activity, or whether the restriction of the individual comes about as a relevant incident to a regulation of a present situation.”
De Veau v. Braisted,
The legislative history
6
behind § 13-3821 does not indicate whether the statute was intended to be punitive or regulatory. Consequently, we turn to the factors enumerated in
Kennedy v. Mendoza-Martinez,
[w]hether the sanction involves an affirmative disability or restraint, whether it has historically been regarded as a punishment, whether it comes into play only on a finding of scienter, whether its operation will promote the traditional aims of punishment — retribution and deterrence, whether the behavior to which it applies is already a crime, whether an alternative purpose to which it may rationally be connected is assignable for it, and whether it appears excessive in relation to the alternative purpose assigned—
Mendoza-Martinez,
1. Application of the Mendoza-Martinez Factors
Both panels of the court of appeals applied the Mendoza-Martinez factors. The panel in Noble held that § 13-3821 constituted punishment under Mendoza-Martinez; the panel in McCuin held that it did not. Both opinions are well-reasoned and persuasive. Because they reach opposite results, however, we conduct our own analysis of the relevant Mendoza-Martinez factors. These factors focus appropriate attention on the effects of the registration requirement on convicted sex offenders and on the rationality between the requirement and its purported non-punitive function. See generally Maria Foscarinis, Note, Toward a Constitutional Definition *176 of Punishment, 80 Colum.L.Rev. 1667, 1670-77 (1980).
a. Registration as an Affirmative Disability or Restraint
In
Noble,
the court of appeals found that the registration statute imposes an affirmative disability or restraint because registration “impair[s] employability, subject[s] registrants to increased police scrutiny, and last[s] for life.”
In
McCuin,
on the other hand, the court of appeals found that the registration requirement “does not
affirmatively
inhibit or restrain an offender’s movement or activities.”
The registration requirement’s marginal impact on the information available to non-law enforcement personnel is not “the kind of affirmative disability or restraint usually associated with criminal punishment.”
McCuin,
b. Registration Historically Regarded as Punishment
In
Noble
the court decided that being perpetually identified as a sex offender could be considered punishment, but that the statutory limitations on access to the registration information alleviate the damaging impact of such exposure.
We agree with the
Noble
court that registration has traditionally been viewed as punitive. The California Supreme Court has described sex offender registration as an “ignominious badge.”
In re Birch,
forever kept under the shadow of his crime, forever kept within voice and view of the criminal magistrate, not being able to change his domicil without giving notice to the ‘authority immediately in charge of his surveillance,’ and without permission in writing. He may not seek, even in other scenes and among other people, to retrieve his fall from rectitude. Even that hope is taken from him, and he is subject to tormenting regulations that, if not so tangible as iron bars and stone walls, oppress as much by their continuity, and deprive of essential liberty.
Weems v. United States,
c. Traditional Aims of Punishment
The registration requirement serves, at least in part, the traditional deterrent function of punishment, the notion being that a convicted sex offender is less likely to commit a subsequent offense if his whereabouts are easily ascertained by law enforcement officials.
See State v. Lammie,
d. Registration Is Not Excessive in Relation to Non-Punitive Purpose
In both
Noble
and
McCuin,
the court of appeals found that the registration requirement was rationally related to an alternative, non-punitive purpose: facilitating law enforcement by aiding in investigative work.
Noble,
The
Noble
court expressed concern that convicted sex offenders, by being required to register, would be burdened by being “defined as a member of a small and ... notorious group more likely to be questioned and investigated when local sex crimes occur.”
*178
Furthermore, the registration requirement, as applied to child sex offenders, is not excessive in relation to its non-punitive, law enforcement purpose. Although the court of appeals in
Noble,
in contrast, held that the scope of the requirement is excessive because it applies equally to anyone convicted of
any
sex offense, including cohabitation, sodomy, adultery, and lewd and lascivious conduct,
2. Balancing the Mendoza-Martinez Factors
We acknowledge that § 13-3821 has both punitive and regulatory effects.
See Trop v. Dulles,
The most significant factor in this case is our determination that, as noted, the overriding purpose of § 13-3821 is facilitating the location of child sex offenders by law enforcement personnel, a purpose unrelated to punishing Noble and McCuin for past offenses. In addition, potentially punitive aspects of the statute have been mitigated. Registrants are not forced to display a scarlet letter to the world; outside of a few regulatory exceptions, the information provided by sex offenders pursuant to the registration statute is kept confidential. See supra note 8 and accompanying text.
Our decision is close. We nonetheless conclude that, on balance, requiring convicted sex offenders to register pursuant to § 13-3821 is not punishment. Consequently, the retrospective application of the statute to these defendants does not violate the ex post facto clause of the United States or Arizona Constitution.
CONCLUSION
Arizona’s sex offender registration statute, A.R.S. § 13-3821, is regulatory in nature and not an unconstitutional
ex post facto
law when applied to these defendants convicted after the enactment of the statute for offenses predating the enactment of the statute. The court of appeals’ opinion in
State v. Noble
is vacated, and the superior court’s order that Noble register pursuant to § 13-3821 is affirmed. The disposition of McCuin’s case is contained in a separate opinion at
Notes
. Section 13-3821 provides in pertinent part:
A. A person who has been convicted of a violation of chapter 14 or 35.1 of this title or who has been convicted of an offense committed in another state which if committed in this state would be a violation of chapter 14 or 35.1 of this title shall, within thirty days after the conviction or within thirty days after entering any county in this state for the purpose of residing or setting up a temporary domicile for thirty days or more, register with the sheriff of the county in which he resides or sets up temporary domicile.
B. At the time of registering, the person shall sign a statement in writing giving such information as required by the director of the department of public safety. The sheriff shall fingerprint and photograph the person and within three days thereafter shall send copies of the statement, fingerprints and photographs to the criminal identification section within the department of public safety and the chief of police, if any, of the place where the person resides.
C. The clerk of the superior court in the county in which a person has been convicted of a violation of chapter 14 or 35.1 of this title shall notify the sheriff in that county of the conviction within thirty days after entry of the judgment.
. Laws 1983, ch. 202, § 13. An earlier version of § 13-3821 was repealed as of October 1, 1978 by Laws 1978, ch. 201, § 242.
. The Arizona Constitution provides that "[n]o ... ex-post-facto law ... shall ever be enacted." Ariz. Const, art. 2, § 25. The United States Constitution provides that "[n]o State shall ... pass any ... ex post facto Law____” U.S. Const. art. 1, § 10.
. Because we have concluded that the analysis under both constitutions is the same, we need not consider the fact that both Noble and McCuin apparently alleged violations of only the Arizona Constitution in the court of appeals, but have alleged violations of both the Arizona and federal constitutions on review.
.
See also United States v. Constantine, 296
U.S. 287, 294,
. Sexual Offenses: Minutes of Hearing on H.B. 2147 Before the House Human Resources Comm., 36th Leg., 1st Sess. 3 (March 8, 1983); Sexual Offenses: Minutes of Hearing on H.B. 2147 Before the House Judiciary Comm., 36th Leg., 1st Sess. 4-5 (March 7, 1983).
.
See In re Reed,
. The information may be released to: noncriminal justice agencies for evaluating prospective employees, public officials, or volunteers; governmental licensing agencies for evaluating prospective licensees; prospective employers and volunteer youth-service agencies whose activities involve regular contact with minors; and the department of economic security and the superior court for determining the fitness of prospective custodians of juveniles. A.R.S. § 41-1750(B)(8), (9), (11), (13).
.
See In re Reed,
. See generally Joseph Romero & Linda Meyer Williams, Recidivism Among Convicted Sex Offenders: A 10-Year Followup Study, 49 Fed.Probation 58 (1985); Kenneth Gray & Johann Mohr, Follow-Up of Male Sex Offenders, in Sexual Behavior and the Law 742 (Ralph Slovenko ed. 1965); A. Nicholas Groth et al., Undetected Recidivism Among Rapists and Child Molesters, 28 Crime and Delinq. 450 (1982).
