O’Connor, J.
{¶ 1} In this appeal,1 we decide the constitutionality of the current version of R.C. Chapter 2950, as amended by 2007 Am.Sub.S.B. No. 10 (“the Adam Walsh [267]*267Act” or “the AWA”), as those provisions apply to sex offenders whose cases were adjudicated prior to its enactment.
{¶ 2} Although we discharge our duty with great respect for the role of the legislature, Kennedy v. Mendoza-Martinez (1963), 372 U.S. 144, 159, 83 S.Ct. 554, 9 L.Ed.2d 644, for the reasons that follow we are compelled to find that R.C. 2950.031 and 2950.032, the reclassification provisions in the AWA, are unconstitutional because they violate the separation-of-powers doctrine. As a remedy, we strike R.C. 2950.031 and 2950.032, hold that the reclassifications of sex offenders by the attorney general are invalid, and reinstate the prior judicial classifications of sex offenders.
I. Relevant Background
A. R.C. Chapter 2950
{¶ 3} R.C. Chapter 2950, Ohio’s law governing the registration and classification of sex offenders and the ensuing community-notification requirements, has evolved substantially since its inception in 1963. See former R.C. Chapter 2950, 130 Ohio Laws 669. The original version of the statute was seldom used, Sears v. State, Clermont App. No. CA2008-07-068, 2009-0hio-3541, 2009 WL 2140032, ¶ 23, and it existed without amendment for three decades.
{¶ 4} In 1994, however, a convicted sex offender in New Jersey abducted, raped, and killed a neighbor’s young child, Megan Kanka. See State v. Williams (2000), 88 Ohio St.3d 513, 516, 728 N.E.2d 342; State v. Cook (1998), 83 Ohio St.3d 404, 405, 700 N.E.2d 570. In the wake of that notorious crime, New Jersey gained national recognition by enacting a law requiring registration of sex offenders and notification to the community of the offender’s presence. The law became known as “Megan’s Law.” Wallace v. State (Ind.2009), 905 N.E.2d 371, 374. The constitutionality of the New Jersey legislation was upheld by the New Jersey Supreme Court in Doe v. Poritz (1995), 142 N.J. 1, 662 A.2d 367.
{¶ 5} Federal legislation followed later that year when Congress enacted the Jacob Wetterling Crimes Against Children and Sexually Violent Offender Registration Act, Section 14071, Title 42, U.S.Code (“the Jacob Wetterling Act”). The [268]*268Jacob Wetterling Act focused on requiring states to implement a registry of sex offenders and those who commit crimes against children. People v. Cintron (2006), 13 Misc.3d 833, 836, 827 N.Y.S.2d 445, fn. 6. Two years after its enactment, the Act was amended to require that states add community-notification provisions. Id. The Jacob Wetterling Act then became better known as the federal “Megan’s Law.” Id.
{¶ 6} The federal Megan’s Law mandates that the states adopt registration and community-notification provisions governing sex offenders or face the loss of federal crime-control funds. Section 14071, Title 42, U.S.Code. The General Assembly enacted Ohio’s version of Megan’s Law in 1996. Am.Sub.H.B. No. 180, 146 Ohio Laws, Part II, 2560, 2601.2
1. Ohio’s Megan’s Law
{¶ 7} Megan’s Law repealed prior versions of R.C. Chapter 2950 and created Ohio’s first comprehensive registration and classification system for sex offenders. 146 Ohio Laws, Part II, 2560. In order to accomplish its goals, Ohio’s Megan’s Law provided for offender registration, classification, and community notification. Cook, 83 Ohio St.3d at 407, 700 N.E.2d 570.
{¶ 8} In 1997, we unanimously upheld the application of Megan’s Law over retroactivity and ex post facto claims.3 State v. Cook, 83 Ohio St.3d 404, 700 N.E.2d 570.
{¶ 9} After Cook, we addressed constitutional challenges to Megan’s Law based on theories other than ex post facto and retroactivity. We rejected, unanimously, the suggestions that Megan’s Law impermissibly intruded on the individual’s rights to maintain privacy, to acquire property, to pursue an occupation, and to maintain a favorable reputation. Williams, 88 Ohio St.3d at 524-527, 728 N.E.2d 342. We also rejected arguments based on double jeopardy, bill of attainder, equal protection, and vagueness. Id. at 528-534.
[269]*269{¶ 10} The following year, we were confronted with a separation-of-powers argument in State v. Thompson (2001), 92 Ohio St.3d 584, 752 N.E.2d 276. We rejected it unanimously.
{¶ 11} Thompson addressed whether former R.C. 2950.09(B)(2) violated “the separation-of-powers doctrine because it encroache[d] upon the judiciary’s fact-finding authority.” Id. at 585. More specifically, we addressed the language in former R.C. 2950.09(B)(2) that required a judge to consider certain factors before determining whether an offender was a sexual predator.
{¶ 12} Our conclusion that the separation-of-powers doctrine was not violated turned on our view that the statute did not divest the court of its fact-finding powers. Id., 92 Ohio St.3d at 587-588, 752 N.E.2d 276. We observed that the statutory factors provided an important framework that assisted judges in making the sexual-predator determination and that the factors, as guidelines, “provide consistency in the reasoning process.” Id. at 587. But more importantly, we recognized that the guidelines did not control the judge’s discretion or require a judge to assign a particular weight to certain factors. Thus, we found no improper interference with the judge’s fact-finding powers.
{¶ 13} We further held that the factors themselves were nonexhaustive, because the statute directed the judge to “consider all relevant factors, including, but not limited to,” the statutory factors. (Emphasis deleted.) Id. at 588. Thus, we concluded, the statute did not violate the separation-of-powers doctrine, because the judge retained discretion to consider any relevant evidence and to determine what weight, if any, to assign to that evidence. Id.
{¶ 14} Ten years after our decision in Cook, we again addressed Megan’s Law in State v. Ferguson, 120 Ohio St.3d 7, 2008-Ohio-4824, 896 N.E.2d 110. In that case, a convicted rapist classified as a sexual predator challenged the constitutionality of the amendments enacted in Am.Sub.S.B. No. 5 (“S.B. 5”), 150 Ohio Laws, Part IY, 6558, 6687-6702 (eff. July 31, 2003). The claims in Ferguson renewed the challenge against the retroactive application of the amended requirements.
{¶ 15} Despite the significant changes wrought by S.B. 5, we upheld the S.B. 5 amendments. In so doing, we rejected Ferguson’s assertions that the amendments violated the Ex Post Facto Clause of the United States Constitution (Section 10, Article I) and the retroactivity provision in Section 28, Article II of the Ohio Constitution. We relied on our decision in Cook, the Supreme Court’s decision in Smith v. Doe (2003), 538 U.S. 84, 123 S.Ct. 1140, 155 L.Ed.2d 164, and other state courts’ decisions to find that Megan’s Law remained a remedial statute. Ferguson at ¶ 29-40. Ferguson, however, was not unanimous. See also State v. Wilson, 113 Ohio St.3d 382, 2007-Ohio-2202, 865 N.E.2d 1264 (holding that an appellate court must review a trial court’s determination in a sex-[270]*270offender-classification hearing under the civil manifest-weight-of-the-evidence standard).
{¶ 16} The dissent in Ferguson criticized the majority’s reliance on Cook: “R.C. Chapter 2950 has been amended [since Cook]. The simple registration process and notification procedures are now different from those considered in Cook and in [Williams, 88 Ohio St.3d 513, 2000-Ohio-428, 728 N.E.2d 342]. R.C. Chapter 2950 has been transformed from remedial to punitive * * Ferguson, 120 Ohio St.3d 7, 2008-Ohio-4824, 896 N.E.2d 110, ¶ 45 (Lanzinger, J., dissenting). More specifically, the dissent explained that, since Cook, the “sexual predator” label became permanent, the registration requirements were made more demanding, the community-notification and residency-restriction provisions were made more extensive, and sheriffs’ authority was expanded to include the power to obtain landlord verification that the offender lived at a registered address. Ferguson at ¶ 46.
{¶ 17} Even as debate over the S.B. 5 amendments was taking place here, however, the General Assembly was reviewing the law and enacting a new scheme, the Adam Walsh Act, R.C. Chapter 2950. That act, not Megan’s Law and its amendments, forms the basis of this appeal.
2. Ohio’s Adam Walsh Act
{¶ 18} In 2006, Congress passed the Adam Walsh Child Protection and Safety Act (“Adam Walsh Act”), P.L. No. 109-248, 120 Stat. 587, codified at Section 16901 et seq., Title 42, U.S.Code. The Act created national standards for sex-offender registration, community notification, and classification. It divides sex offenders into three categories or “tiers”- — Tier I, Tier II, and Tier III — based solely on the crime committed. Section 16911. The duration of the offender’s obligation to update his personal information for the registry depends on his tier classification. Section 16915.
{¶ 19} Section 16912(a) directs every jurisdiction to maintain a sex-offender registry conforming to the requirements of the Act. And to ensure compliance, Congress directed that states that did not adopt the Adam Walsh Act risked losing ten percent of certain federal crime-control funds that would otherwise be allocated to them. Section 16925(a).
{¶ 20} The following year, the General Assembly enacted 2007 Am.Sub.S.B. No. 10.4 S.B. 10 repealed Megan’s Law and replaced it with a new, retroactive scheme that includes the tier system required by Congress. R.C. Chapter 2950.
[271]*271{¶ 21} The former categories of sexually oriented offender, habitual sex offender, and sexual predator no longer exist, nor is the court required to hold classification hearings as before. Instead, offenders are classified as Tier I, Tier II, or Tier III sex offenders (or child-victim offenders) based solely on the offender’s offense. R.C. 2950.01. Specified officials are required to notify existing offenders of their duties and new tier classification. R.C. 2950.03, 2950.081, and 2950.032.
{¶ 22} Significantly for our purposes here, under the AWA judges no longer have discretion to determine which classification best fits the offender. Id. Instead, a few months before the AWA’s effective date, the General Assembly directed the attorney general to reclassify existing offenders. R.C. 2950.031(A) and 2950.032(A)(1). Offenders who had registered before December 1, 2007, were to be reclassified as Tier I, II, or III sex offenders according to the new statutes. Id. Tiers are assigned solely by reference to the offense. See R.C. 2950.01(E), (F), and (G). The entire reclassification process is administered by the attorney general, with no involvement by any court. There is no individualized assessment. No consideration is given to any of the other factors employed previously in classification hearings held pursuant to Megan’s Law. Id. As a result, the trial court is stripped of any power to engage in independent fact-finding to determine an offender’s likelihood of recidivism. Expert testimony is no longer presented; the offender’s criminal and social history are no longer relevant.5
{¶ 23} After tier classification is completed, the offender is required to register according to the classification. R.C. 2950.04(A)(1). The registration require[272]*272ments under the AWA vary depending on the tier in which the offender is classified. R.C. 2950.06(B) (frequency of duty to verify personal information differs depending on tier); R.C. 2950.07 (duration of duty to comply with registration/verification requirements depends on tier).
{¶ 24} Under Megan’s Law, if an offender was classified at the lowest risk level, i.e., as a sexually oriented offender, he was required to register annually for a period of ten years. Former R.C. 2950.07(B)(3) and 2950.06(B)(2), 146 Ohio Laws, Part II, 2617, 2613. No community notification followed. Under the AWA, although there is still no community notification for the lowest-risk offenders, i.e., offenders classified into Tier I, those offenders must verify their personal information annually for 15 years rather than the ten years required under Megan’s Law. R.C. 2950.07(B)(3).
{¶ 25} Under Megan’s Law, an offender who posed an intermediate risk, i.e., less than a sexual predator but more than a sexually oriented offender, was labeled a habitual sexual offender. See former R.C. 2950.01(B), 146 Ohio Laws, Part II, 2601. Habitual sexual offenders were required to verify their personal information annually for 20 years, former R.C. 2950.07(B)(2) and 2950.06(B)(2), 146 Ohio Laws, Part II, 2617, 2613, and community notification was required only if the judge deemed it appropriate. Former R.C. 2950.11(A) and (F), 146 Ohio Laws, Part II, 2627, 2630. In the AWA scheme, the intermediate-risk offender is placed in Tier II. Tier II offenders must verify every 180 days for 25 years, R.C. 2950.07(B)(2) and 2950.06(B)(2), but community notification is not required. R.C. 2950.11(F) (community notification limited to Tier III offenders).
{¶ 26} The sexual-predator classification was the highest-risk offender under Megan’s Law. Sexual predators were required to register every 90 days for life. Former R.C. 2950.06(B)(1) and 2950.07(B)(1), 146 Ohio Laws, Part II, 2613 and 2616. Community notification was required. Former R.C. 2950.11(A), 146 Ohio Laws, Part II, 2627. Under the AWA, Tier III offenders have the same obligation to verify their personal information as sexual predators, R.C. 2950.06(B)(3) (every 90 days) and 2950.07(B)(1) (for life), and community notification is required. R.C. 2950.11(A). However, the scope of registration is expanded greatly.
{¶ 27} Megan’s Law required an offender to register with the sheriff in the county in which he resided. Former R.C. 2950.04(A), 146 Ohio Laws, Part II, 2609. Pursuant to the AWA, the offender must register with the sheriff in the county in which he lives, the county in which he attends school, the county in which he is employed, any county in which he is domiciled temporarily for more than three days, and even a county in another state if he works or attends school there. R.C. 2950.04(A)(2)(a) through (e). When he registers, he must provide his full name and any aliases as well as his date of birth, social security number, [273]*273address, the name and address of his employer and school, the license plate of any motor vehicle he owns or operates as part of his employment, his driver’s license number, any professional or occupational registration or license, any email address, and all Internet identifiers or telephone numbers registered to him. R.C. 2950.04(C).
{¶ 28} Similarly, the AWA expands community-notification requirements. In the new scheme, the sheriff gives notice of a Tier III offender’s name, address, and conviction to all residents within 1,000 feet of the offender’s residence. R.C. 2950.11(A)(1)(a). If the offender lives in a multiple-unit building, all residents who share a common hallway with the offender must be notified. R.C. 2950.11(A)(1)(b). The AWA also forbids all sex offenders, including those who have not offended against children, from living within 1,000 feet of a school, preschool, or child day-care facility. R.C. 2950.034(A).6
B. The Appeal Before the Court
{¶ 29} On October 18, 1999, appellant Bodyke entered an agreed plea of no contest to one count of breaking and entering in violation of R.C. 2911.13(A) and one count of sexual battery in violation of R.C. 2907.03(A)(3). Two months later, the trial judge sentenced him to concurrent sentences of six months’ imprisonment for breaking and entering and two years’ imprisonment for sexual battery. In addition, relying on the version of R.C. 2950.01 that was in effect at that time, he was classified as a sexually oriented offender, the lowest level of offender under Megan’s Law. As a sexually oriented offender, Bodyke was required to register with the county sheriff every year for ten years. He was not subject to the community-notification provisions, however.
{¶ 30} In November 2007, eight years after Bodyke’s no-contest plea and almost five years after being released from prison, the attorney general, acting pursuant to the reclassification provisions in the AWA, notified Bodyke that he would be reclassified. Bodyke was automatically labeled a Tier III offender, which requires him to personally register with the local sheriff every 90 days for the duration of his life. Further, Bodyke is now subject to community-notification provisions.
{¶ 31} He appealed to the Sixth District Court of Appeals, which affirmed unanimously. We accepted his discretionary appeal, 121 Ohio St.3d 1438, 2009-Ohio-1638, 903 N.E.2d 1222, and now reverse.
[274]*274II. Analysis
A. Stare Decisis
{¶ 32} The parties and amici curiae repeatedly urge that Cook and Ferguson compel a particular result here, and some suggest that the doctrine of stare decisis controls the outcome. As we have described here, this court has repeatedly upheld Megan’s Law as constitutional over an array of challenges. But those decisions compel no particular result in the cases before us.
{¶ 33} Initially, we reiterate an important but often overlooked aspect of our law on stare decisis. We have held that “stare decisis applies to rulings rendered in regard to specific statutes, [but] it is limited to circumstances ‘where the facts of a subsequent case are substantially the same as a former case.’ ” Arbino v. Johnson & Johnson, 116 Ohio St.3d 468, 2007-Ohio-6948, 880 N.E.2d 420, ¶ 23, quoting Rocky River v. State Emp. Relations Bd. (1989), 43 Ohio St.3d 1, 5, 539 N.E.2d 103. Thus, as a threshold question, we must determine whether the statute and facts presented today are the same as those presented in precedent. We are persuaded that the AWA is substantially different from Megan’s Law. Cook and Ferguson, the cases cited as dispositive of this appeal, did not present a separation-of-powers challenge. And Thompson', which did, involved a statutory provision not implicated in this appeal because Thompson was concerned only with former R.C. 2950.09(B)(2), the provision listing factors a judge was required to consider in determining whether an offender is a sexual predator. 92 Ohio St.3d at 584, 752 N.E.2d 276 (“The sole issue before this court is whether R.C. 2950.09 violates the separation-of-powers doctrine because it encroaches upon the judiciary’s fact-finding authority. We find that it does not”). Nothing like that provision can be found in the AWA.
{¶ 34} On those bases alone, we would not be obliged to apply those decisions to this case. But more importantly for our purposes here, we believe that there is a more vital and compelling limitation on the doctrine as it has developed in Ohio: its inapplicability to constitutional claims.
{¶ 35} Our decision in Galatis, 100 Ohio St.3d 216, 2003-Ohio-5849, 797 N.E.2d 1256, established the test for departing from precedent. But Galatis arose in the context of insurance and contract law, not constitutional law. That difference is significant, as we made clear in our decision in Rocky River, 43 Ohio St.3d at 6-10, 539 N.E.2d 103. In that case, we acknowledged that stare decisis “does not apply with the same force and effect when constitutional interpretation is at issue. ” (Emphasis added.) Id.
{¶ 36} We concluded in Rocky River by noting that the reconsideration of past decisions in the constitutional realm “is not some forbidden aberration. It is, in fact, the fulfillment of our constitutional responsibilities * * Id. at 7. Nothing [275]*275in our decision in Galatis suggests otherwise. Rocky River retains its vitality, at least insofar as this principle is concerned: “Stare decisis is not inflexibly applicable to constitutional interpretation.” (Emphasis sic.) Id. at 10. See also Lawrence v. Texas (2003), 539 U.S. 558, 577, 123 S.Ct. 2472, 156 L.Ed.2d 508 (“The doctrine of stare decisis is essential to the respect accorded to the judgments of the Court and the stability of the law. It is not, however, an inexorable command”).
{¶ 37} Stare decisis remains a controlling doctrine in cases presenting questions on the law of contracts, property, and torts, but it is not controlling in cases presenting a constitutional question. Thus, in the instant appeals, stare decisis does not compel us to reach the same result we reached in past decisions, including Ferguson and Cook.
{¶ 38} We now proceed with our analysis of the important constitutional questions before us.
B. Separation-of-Powers Doctrine
{¶ 39} The first, and defining, principle of a free constitutional government is the separation of powers. Evans v. State (Del.2005), 872 A.2d 539, 543. In Kilbourn v. Thompson (1880), 103 U.S. 168, 190-191, 26 L.Ed. 377, the United States Supreme Court stated:
{¶ 40} “It is believed to be one of the chief merits of the American system of written constitutional law, that all the powers intrusted to government, whether State or national, are divided into the three grand departments, the executive, the legislative, and the judicial. That the functions appropriate to each of these branches of government shall be vested in a separate body of public servants, and that the perfection of the system requires that the lines which separate and divide these departments shall be broadly and clearly defined. It is also essential to the successful working of this system that the persons intrusted with power in any one of these branches shall not be permitted to encroach upon the powers confided to the others, but that each shall by the law of its creation be limited to the exercise of the powers appropriate to its own department and no other.”
{¶ 41} As this court has observed with regard to our own state system of government:
{¶ 42} “While Ohio, unlike other jurisdictions, does not have a constitutional provision specifying the concept of separation of powers, this doctrine is implicitly embedded in the entire framework of those sections of the Ohio Constitution that define the substance and scope of powers granted to the three branches of state government.” S. Euclid v. Jemison (1986), 28 Ohio St.3d 157, 158-159, 28 OBR 250, 503 N.E.2d 136. It “represents the constitutional diffusion of power within our tripartite government. The doctrine was a deliberate design to secure liberty [276]*276by simultaneously fostering autonomy and comity, as well as interdependence and independence, among the three branches.” Norwood v. Horney, 110 Ohio St.3d 353, 2006-Ohio-3799, 853 N.E.2d 1115, ¶ 114.
{¶ 43} “ ‘ “[T]he people, possessing all governmental power, adopted constitutions, completely distributing it to appropriate departments.” Hale v. State (1896), 55 Ohio St. 210, 214, 45 N.E. 199, 200. They vested the legislative power of the state in the General Assembly (Section 1, Article II, Ohio Constitution), the executive power in the Governor (Section 5, Article III, Ohio Constitution), and the judicial power in the courts (Section 1, Article IV, Ohio Constitution).’ ” Norwood at ¶ 115, quoting State ex rel. Academy of Trial Lawyers v. Sheward (1999), 86 Ohio St.3d 451, 462, 715 N.E.2d 1062.
{¶ 44} “The essential principle underlying the policy of the division of powers of government into three departments is that powers properly belonging to one of the departments ought not to be directly and completely administered by either of the other departments, and further that none of them ought to possess directly or indirectly an overruling influence over the others.” State ex rel. Bryant v. Akron Metro. Park Dist. of Summit Cty. (1929), 120 Ohio St. 464, 473, 166 N.E. 407. Thus, the people specified in our Constitution that “[t]he general assembly shall [not] * * * exercise any judicial power, not herein expressly conferred.” Section 32, Article II, Ohio Constitution. Our decisions reflect these principles.
{¶ 45} We have held that “[t]he administration of justice by the judicial branch of the government cannot be impeded by the other branches of the government in the exercise of them respective powers.” State ex rel. Johnston v. Taulbee (1981), 66 Ohio St.2d 417, 20 O.O.3d 361, 423 N.E.2d 80, paragraph one of the syllabus.
{¶ 46} The judiciary has both the power and the solemn duty to determine the constitutionality and validity of acts by other branches of the government and to ensure that the boundaries between branches remain intact. State ex rel. Ohio Academy of Trial Lawyers v. Sheward (1999), 86 Ohio St.3d 451, 462, 715 N.E.2d 1062. “[J]urists have long understood that they must be wary of any usurpation of the powers conferred on the judiciary by constitutional mandate and any intrusion upon the courts’ inherent powers * * Norwood, 110 Ohio St.3d 353, 2006-Ohio-3799, 853 N.E.2d 1115, at ¶ 115. We therefore must “jealously guard the judicial power against encroachment from the other two branches of government and * * * conscientiously perform our constitutional duties and continue our most precious legacy.” Sheward at 467.
{¶ 47} Our vigilance is not born of self-reverence. Rather, we protect the borders separating the three branches in order to ensure the security and harmony of the government, Weaver v. Lapsley (1869), 43 Ala. 224, 1869 WL 503, *5, and to avoid the evils that would flow from legislative encroachment on our independence. Lawson v. Jeffries (1873), 47 Miss. 686, 1873 WL 4108, *8. As [277]*277Montesquieu warned, “ ‘[w]hen the legislative and executive powers are united in the same person, or in the same body of magistracy, there can be then no liberty * * *. [And] there is no liberty, if the power of judging be not separated from the legislative and executive powers.’ ” Evans v. State, 872 A.2d at 544, quoting Baron de Montesquieu, The Spirit of the Laws (Thomas Nugent trans., 1949), fn. 39. See also Clinton v. New York (1998), 524 U.S. 417, 450, 118 S.Ct. 2091, 141 L.Ed.2d 393 (the separation-of-powers doctrine guards against the threat to liberty posed by the concentration of power in a single branch of government).
{¶ 48} But the doctrine also recognizes that our government is composed of equal branches that must work collectively toward a common cause. And in doing so, the Constitution permits each branch to have some influence over the other branches in the development of the law. For example, the legislative branch plays an important and meaningful role in the criminal law by defining offenses and assigning punishment, while the judicial branch has its equally important role in interpreting those laws.
{¶ 49} As the Supreme Court has explained, the Madisonian vision of the separation of powers did not contemplate three branches operating in isolation, each without influence over the others. Rather, the doctrine was designed to protect against “ ‘the whole power of one department [being] exercised by the same hands which possess the ivhole power of another department,’ ” in which case “ ‘the fundamental principles of a free constitution, are subverted.’ ” (Emphases sic.) Mistretta v. United States (1989), 488 U.S. 361, 380-382, 109 S.Ct. 647, 102 L.Ed.2d 714, quoting The Federalist No. 47 (J. Cooke Ed.1961) 325-326. The court reminds us of Madison’s belief that “our constitutional system imposes upon the Branches a degree of overlapping responsibility, a duty of interdependence as well as independence * * Mistretta, id.
{¶ 50} Navigating the boundaries between interdependence and independence of the branches is not always easy. But we have guideposts to aid us.
{¶ 51} Foremost in the analysis, we recognize that the Founders’ design of the tripartite model was intended to serve as “ ‘a self-executing safeguard against the encroachment or aggrandizement of one branch at the expense of the other.’ ” Mistretta, 484 U.S. at 382, 109 S.Ct. 647, 102 L.Ed.2d 714, quoting Buckley v. Valeo (1976), 424 U.S. 1, 122, 96 S.Ct. 612, 46 L.Ed.2d 659. The Supreme Court counsels that “this concern of encroachment and aggrandizement” animates judicial decisions on the separation of powers and arouses vigilance against the “ ‘hydraulic pressure inherent within each of the separate Branches to exceed the outer limits of its power.’ ” Mistretta, 488 U.S. at 382, quoting Immigration & Naturalization Serv. v. Chadha (1983), 462 U.S. 919, 951, 103 S.Ct. 2764, 77 L.Ed.2d 317. The court has “not hesitated to strike down provisions of law that either accrete to a single Branch powers more appropriately diffused among [278]*278separate Branches or that undermine the authority and independence of one or another coordinate Branch.” Mistretta, id.
{¶ 52} Thus, while we must respect the fact that the authority to legislate is for the General Assembly alone, we must also ensure that its legislative prerogative is not unbridled. The General Assembly cannot require the courts “to treat as valid laws those which are unconstitutional. If this could be permitted, the whole power of the government would at once become absorbed and taken into itself by the Legislature.” Bartlett v. State (1905), 73 Ohio St. 54, 58, 75 N.E. 939. We must be wary that the legislature, in discharging its own duties, does not accrete power and encroach on the province of the judiciary.
{¶ 53} In cases specifically involving the judicial branch, the Supreme Court advises vigilance against two dangers: “that the Judicial Branch neither be assigned nor allowed ‘tasks that are more properly accomplished by [other] branches,’ Morrison v. Olson [1988], 487 U.S. [654] 680-681 [108 S.Ct. 2597, 101 L.Ed.2d 569], and, second, that no provision of law ‘impermissibly threatens the institutional integrity of the Judicial Branch.’ Commodity Futures Trading Comm’n. v. Schor [1986], 478 U.S. [833], at 851 [106 S.Ct. 3245, 92 L.Ed.2d 675].” Mistretta, 488 U.S. at 383, 109 S.Ct. 647, 102 L.Ed.2d 714. Courts also condemn legislative encroachments that violate the separation of powers by vesting officials in the executive branch with the power to review judicial decisions or by commanding that the courts reopen final judgments. Plaut v. Spendthrift Farm, Inc. (1995), 514 U.S. 211, 218-219, 115 S.Ct. 1447, 131 L.Ed.2d 328.
{¶ 54} With these principles in mind, we turn to a key aspect of the AWA — the reclassification scheme. That scheme requires the attorney general to reclassify offenders who previously were classified by Ohio judges according to the provisions in Megan’s Law and its precursor.
1. The reclassification provisions violate the separation-of-powers doctrine
{¶ 55} The AWA’s provisions governing the reclassification of sex offenders already classified by judges under Megan’s Law violate the separation-of-powers doctrine for two related reasons: the reclassification scheme vests the executive branch with authority to review judicial decisions, and it interferes with the judicial power by requiring the reopening of final judgments. It is well settled that a legislature cannot enact laws that revisit a final judgment. We have held for over a century that “the Legislature cannot annul, reverse, or modify a judgment of a court already rendered.” Bartlett v. State, 73 Ohio St. at 58, 75 N.E. 939. See also United States v. O’Grady (1874), 89 U.S. (22 Wall.) 641, 647-648, 22 L.Ed. 772 (“Judicial jurisdiction implies the power to hear and determine a cause, and * * * Congress cannot subject the judgments of the Supreme Court to the re-examination and revision of any other tribunal or any other department of the government”). As the Supreme Court of California recently explained, [279]*279“judgments cannot be deprived of their ‘finality’ through statutory conditions not in effect when the judicial branch gave its ‘last word’ in the particular case,” regardless of the policy behind the legislation. People v. King (2002), 27 Cal.4th 29, 35, 115 Cal.Rptr.2d 214, 37 P.3d 398, citing Plaut, 514 U.S. at 227, 230, 115 S.Ct. 1447, 131 L.Ed.2d 328. “A judgment which is final by the laws existing when it is rendered cannot constitutionally be made subject to review by a statute subsequently enacted * * Gompf v. Wolfinger (1902), 67 Ohio St. 144, 65 N.E. 878, at paragraph three of the syllabus. See also Plaut, 514 U.S. at 222, 115 S.Ct. 1447, 131 L.Ed.2d 328, quoting The Federalist No. 81 (J. Cooke Ed.1961) 545 (“ ‘A legislature without exceeding its province cannot reverse a determination once made, in a particular case * * * ’ ”). The reclassification provisions violate these bedrock principles.
{¶ 56} The reclassification scheme in the AWA works to “legislatively vacate[ ] the settled and journalized final judgments of the judicial branch of government.” State v. Russell, Trumbull App. No. 2008-T-0074, 2009-Ohio-5213, 2009 WL 3154898, ¶ 93 (Grendell, J., concurring in judgment only). The legislative attempt to reopen journalized final judgments imposing registration and community-notification requirements on offenders so that new requirements may be imposed suffers the same constitutional infirmity. “It does not matter that the legislature has the authority to enact or amend laws requiring sex offenders to register or that the current Sex Offender Act does not order the courts to reopen final judgments. The fact remains that the General Assembly ‘cannot annul, reverse, or modify a judgment of a court already rendered.’ Bartlett, 73 Ohio St. at 58, 75 N.E. 939. [Reclassification], as a practical matter, nullifies that part of the court’s [initial classification] Judgment [in this ease] ordering [the offender] to register for a period of ten years as a sexually oriented offender. To assert that the General Assembly has authority to create a new system of classification does not solve the problem that [the] original classification constituted a final judgment. There is no exception to the rule that the final judgments may not be legislatively annuled [sic] in situations where the Legislature has enacted new legislation.” State v. Grate, Trumbull App. No. 2008-T-0058, 2009-Ohio-4452, 2009 WL 2710100, ¶ 16.
{¶ 57} Just as “Congress cannot vest review of the decisions of Article III courts in officials of the Executive Branch” or interfere with the judiciary by “commanding the federal courts to reopen final judgments,” Plaut, 514 U.S. at 218, 219, 115 S.Ct. 1447, 131 L.Ed.2d 328, the General Assembly cannot vest authority in the attorney general to reopen and revise the final decision of a judge classifying a sex offender.
{¶ 58} Our Constitution and case law make undeniably clear that the judicial power resides exclusively in the judicial branch. Ex parte Logan Branch of State [280]*280Bank, of Ohio (1853), 1 Ohio St. 432, 434, 1853 WL 48. The judicial power of the state is vested exclusively in the courts. Section 1, Article TV, Ohio Constitution. The power to review and affirm, modify, or reverse other courts’ judgments is strictly limited to appellate courts. Section 3(B)(2), Article IV, Ohio Constitution. The AWA intrudes on that exclusive role and thus violates the separation-of-powers doctrine.
{¶ 59} Moreover, once the final judgment has been opened, the AWA requires that the attorney general “shall determine” the new classifications of offenders and delinquent children who were classified by judges under the former statutes. R.C. 2950.031(A)(1) and 2950.032(A)(1)(a) and (b). In doing so, it violates a second prohibition by assigning to the executive branch the authority to revisit a judicial determination.
{¶ 60} Thus, we conclude that R.C. 2950.031 and 2950.032, which require the attorney general to reclassify sex offenders who have already been classified by court order under former law, impermissibly instruct the executive branch to review past decisions of the judicial branch and thereby violate the separation-of-powers doctrine.
{¶ 61} We further conclude that R.C. 2950.031 and 2950.032, which require the attorney general to reclassify sex offenders whose classifications have already been adjudicated by a court and made the subject of a final order, violate the separation-of-powers doctrine by requiring the opening of final judgments.
{¶ 62} In light of our conclusion that the reclassification provision is unconstitutional, we decline to address the remaining constitutional claims at this time. The sole remaining salient question is, Which remedy to apply? See State v. Foster, 109 Ohio St.3d 1, 2006-Ohio-856, 845 N.E.2d 470, ¶ 84.
2. Severance is the proper remedy
{¶ 63} As we did in Foster, “[w]e presume that compliance with the United States and Ohio Constitutions is intended and that an entire statute is intended to be effective. R.C. 1.47(A) and (B). Furthermore, R.C. 1.50 states, ‘If any provision of a section of the Revised Code or the application thereof to any person or circumstance is held invalid, the invalidity does not affect other provisions or applications of the section or related sections which can be given effect without the invalid provision or application, and to this end the provisions are severable.’ (Emphasis added.)
{¶ 64} “When this court holds that a statute is unconstitutional, severance may be appropriate. * * * Severance is suitable, however, only where it satisfies our well-established standard. * * *
{¶ 65} “ * * * Three questions are to be answered before severance is appropriate. ‘ “ ‘(1) Are the constitutional and the unconstitutional parts capable of [281]*281separation so that each may be read and may stand by itself? (2) Is the unconstitutional part so connected with the general scope of the whole as to make it impossible to give effect to the apparent intention of the Legislature if the clause or part is stricken out? (3) Is the insertion of words or terms necessary in order to separate the constitutional part from the unconstitutional part, and to give effect to the former only?’ ” ’ ” Foster, 109 Ohio St.3d 1, 2006-Ohio-856, 845 N.E.2d 470, ¶ 93-95, quoting Geiger v. Geiger (1927), 117 Ohio St. 451, 466, 160 N.E. 28, quoting State v. Bickford (1913), 28 N.D. 36, 147 N.W. 407, paragraph 19 of the syllabus.
{¶ 66} Applying these standards, we conclude that severance of R.C. 2950.031 and 2950.032, the reclassification provisions in the AWA, is the proper remedy. By excising the unconstitutional component, we do not “detract from the overriding objectives of the General Assembly,” i.e., to better protect the public from the recidivism of sex offenders, and the remainder of the AWA, “which is capable of being read and of standing alone, is left in place.” Foster at ¶ 98. We therefore hold that R.C. 2950.031 and 2950.032 are severed and, that after severance, they may not be enforced. R.C. 2950.031 and 2950.032 may not be applied to offenders previously adjudicated by judges under Megan’s Law, and the classifications and community-notification and registration orders imposed previously by judges are reinstated.
III. Conclusion
{¶ 67} For the foregoing reasons, we hold that R.C. 2950.031 and 2950.032, which require the attorney general to reclassify sex offenders who have already been classified by court order under former law, impermissibly instruct the executive branch to review past decisions of the judicial branch and thereby violate the separation-of-powers doctrine. In addition, R.C. 2950.031 and 2950.032 violate the separation-of-powers doctrine by requiring the opening of final judgments.
Judgments reversed.
Lundberg Stratton and Lanzinger, JJ., concur.
Pfeifer, J., concurs in the syllabus and judgment.
O’Donnell, J., concurs in part and dissents in part.
Cupp, J., dissents.
Brown, C.J., not participating.