*446OPINION
By the Court,
Leavitt, L:This appeal is from an order of the district court denying a petition for judicial review. Appellant Angel Tarango is an undocumented worker who was injured during the course of his employment with a Nevada employer. Although Tarango received *447workers’ compensation benefits under Nevada’s Industrial Insurance Act, he was denied vocational rehabilitation benefits. The primary question presented on appeal is whether an undocumented alien is precluded from receiving vocational training under Nevada’s workers’ compensation scheme if those benefits would be in violation of federal law, state law, or the Equal Protection Clause. We conclude that although compensation can be paid to an injured undocumented worker pursuant to the state’s workers’ compensation scheme, formal vocational training must be denied if that training is required solely because of immigration status. Therefore, we affirm the district court’s order awarding Tarango permanent partial disability payments, but denying him vocational rehabilitation benefits.
FACTS
Appellant Tarango suffered an industrial injury in January 1996 after he fell from an eight-foot ladder while putting up drywall. Tarango was taken to a University Medical Center Quick Care facility, and there he was diagnosed with a lumbosacral sprain. By early 1997, Tarango’s physician stated that Tarango had received maximum medical treatment, and Tarango was cleared to return to the workforce. However, because of the injury, Tarango was limited to permanent medium duty work in which he was to lift no more than fifty pounds. Since Tarango’s position with Champion Drywall required more vigorous activity than Tarango’s medical clearance would allow, Tarango’s physician recommended vocational rehabilitation.
In June 1997, insurer State Industrial Insurance System (SIIS) awarded Tarango permanent partial disability (PPD) based upon a ten percent whole person impairment. Additionally, because of the permanent work restrictions placed upon him, Tarango also applied for vocational rehabilitation benefits, pursuant to NRS 616C.530.
Commensurate with federal law, however, SIIS issued a written determination stating that before Tarango could receive vocational rehabilitation benefits, he was required to submit Immigration and Naturalization Form 1-9. The form is required as proof of an alien’s legal right to work in the United States. When Tarango failed to satisfy the verification requirement, SIIS suspended his benefits until such proof could be presented.
In two separate proceedings in August and October, 1997, a hearing officer affirmed both the SIIS decisions to award Tarango ten percent PPD, and to deny Tarango vocational rehabilitation benefits absent proof of a legal right to work.
On appeal of the hearing officer’s determination, the appeals officer held that the ten percent PPD award was supported by the *448totality of the documentary evidence. Further, the appeals officer determined that federal law supported SIIS’s denial of vocational rehabilitation benefits. Specifically, the appeals officer stated that the federal Immigration Reform and Control Act1 (IRCA) — which prohibits individuals, entities, or state agencies from providing employment opportunities for illegal aliens — preempted SIIS’s duties to provide Tarango with vocational rehabilitation benefits under NRS 616C.530.
Tarango’s subsequent petition for judicial review was denied by the Honorable James C. Mahan on May 26, 1999. The district court held that there was substantial evidence in the record to support the appeals officer’s decision. Tarango now appeals.
DISCUSSION
This is a case of first impression. The Nevada Industrial Insurance Act (NIIA) states that an employee or worker includes “every person in the service of an employer under any appointment or contract of hire or apprenticeship, express or implied, oral or written, whether lawfully or unlawfully employed.”2 Therefore, Nevada’s workers’ compensation laws apply to all injured workers within the state, regardless of immigration status. However, the issue before this court is not whether Tarango can receive workers’ compensation under our laws; rather, we must determine whether an injured undocumented worker’s access extends to the full depths of the workers’ compensation scheme.
Unlike compensatory benefits which award monetary relief, vocational rehabilitation benefits are designed to return the injured worker to the workforce by helping him obtain employment within his physical abilities. We conclude that if Champion Dry wall provided Tarango with modified employment, Champion Drywall would be circumventing the IRCA. Further, if SIIS provided Tarango with vocational rehabilitation benefits to obtain further training, SIIS would be violating state law and the Equal Protection Clause.
It is well settled that Congress has the power to impose alien-age legislation on the states.3 Moreover, it is well established that immigration legislation “is unquestionably exclusively a federal power.”4 Although the states do have some authority to deal with *449aliens in a manner that ‘ ‘mirrors federal objectives and furthers a legitimate state goal,” state interests must ultimately give way to the federal government’s broad power to regulate matters of alienage.5
Congressional power to oversee immigration stems from a variety of sources. Primarily, the United States Constitution grants Congress the authority to “establish an uniform Rule of Naturalization.”6 Further, Congress has plenary power with respect to both foreign relations and global commerce.7 These powers, coupled with the inherent authority of the sovereign to close its borders, have created an intricate scheme governing the admission and status of aliens within the United States.8
The United States Supreme Court has expanded this authority further by recognizing the power as plenary, or “largely immune from judicial inquiry and interference.’ ’9 Specifically, the Court has stated that the “obvious need for delicate policy judgments has counseled the Judicial Branch to avoid intrusion into this field.”10 Similarly, the Court has held that “it is the business of the political branches of the Federal Government, rather than that of either the States or the Federal Judiciary, to regulate the conditions of entry and residence of aliens.”11 This power not only extends to the admission and naturalization of aliens, but also to the “regulation of their conduct before naturalization.”12 As a result, we must conclude that because of the federal government’s plenary power in the area of alienage, any legislation created by Congress — such as the IRCA — preempts Nevada’s workers’ compensation laws as those laws have an effect on aliens in this state.
The IRCA was designed by Congress to establish procedures that make it more arduous to employ unauthorized aliens, and to punish those employers who knowingly offer jobs to unauthorized aliens.13 The Act defines an “unauthorized alien” as an individ*450ual who is not “lawfully admitted for permanent residence, or . . . authorized to be so employed” in the United States.14
Specifically, the Act precludes employers not only from hiring unauthorized aliens, but also from continuing to employ those workers once the employer becomes aware of the employee’s illegal status.15 Violators are punished with substantial fines as well as possible imprisonment.16
We conclude that because Tarango could not substantiate his legal right to work with an Immigration and Naturalization Form 1-9, he squarely fell into Congress’ definition of an “unauthorized alien.” As a result, Champion Drywall could no longer continue to employ Tarango — once Tarango’s undocumented status was determined — without violating the IRCA and incurring federal penalties.
We note, however, that although the language of the IRCA focuses on punishing the employer of unauthorized aliens, or those agencies that refer unauthorized aliens for a fee, the Act does not provide a reference point for the insurer’s role. SIIS is not employing Tarango or referring him for a fee. Thus, it is our view that although SIIS would be facilitating future employment for an unauthorized alien by providing vocational rehabilitation benefits, there is no indication that SIIS is prohibited or would be punished under the IRCA for its involvement. Further, we do not consider it outside the realm of possibility that appellant’s future employment lies outside the boundaries of the United States, and such vocational training could be put to use elsewhere.
Nonetheless, we conclude that SIIS is precluded from providing vocational training pursuant to state law. The state law in question is NRS 616C.530. The statute provides:
An insurer shall adhere to the following priorities in returning an injured employee to work:
1. Return the injured employee to the job he had before his injury.
2. Return the injured employee to a job with the employer he worked for before his accident that accommodates any limitation imposed by his injury.
3. Return the injured employee to employment with another employer in a job that uses his existing skills.
4. Provide training for the injured employee while he is working in another vocation.
*4515. Provide formal training or education for the injured employee in another vocation.17
We have held in the past that “[t]he intent of the legislature is the controlling factor in statutory interpretation.”18 Here, NRS 616C.530 declares itself to be based on priority, and as a result, we conclude that the intent of the legislature is clear and should be given its ordinary meaning.19 Thus, the statute provides that the insurer shall first attempt to return the injured worker to his former job, and lastly, the insurer shall provide formal training or education.20
In this instance, SHS determined to deny all vocational training benefits because Tarango failed to provide proof of his lawful right to work in the United States. We conclude that this determination was in harmony with the IRCA and NRS 616C.530.
Foremost, if Tarango was a documented worker, he clearly could have returned to similar employment in the United States. Tarango was not incapacitated. Rather, the record indicates that the only limitation on Tarango’s abilities was that he should lift no more than fifty pounds.
Tarango’s ability to work placed SIIS in a precarious position. First, SIIS could have returned Tarango to the workforce in a capacity provided by NRS 616C.530, and thereby caused an employer to violate the IRCA by hiring Tarango. Second, SHS could have ignored the priority scheme established by the legislature in the vocational rehabilitation statute and awarded Tarango formal training based solely on his illegal status. Or third, SnS could have denied all vocational rehabilitation benefits. We conclude that the latter option was the only logical choice.
As to the first alternative, Tarango’s injury prevented him from returning to Champion Dry wall in his former role. Therefore, NRS 616C.530(1) was never at issue. However, NRS 616C.530(2) and (3) were clearly applicable. Because Tarango could return to the workforce in a limited role, SHS was required by the priority scheme to return Tarango to Champion Drywall or to a similarly *452situated employer. Yet, as previously noted, such placement by SIIS would have required the employer to knowingly violate the IRC A and incur substantial penalties. Although SIIS would not have incurred those penalties, we conclude that this alternative would have led to an illogical and absurd result.21
Under the second alternative, SIIS would be required to ignore the priority scheme established by the legislature in NRS 616C.530 and to provide Tarango with formal training based solely on his illegal status.22 Yet, we conclude that the agency’s authority is not so broadly extended. Although SIIS is “impliedly clothed with power to construe the relevant laws and set necessary precedent to administrative action,” it is not permitted to circumvent the legislature’s clear intent in creating the prioritized rehabilitation scheme.23
Further, we fail to comprehend how providing Tarango with formal training would create more efficiency in the workers’ compensation system. The system is designed to “ensure the quick and efficient payment of compensation to injured and disabled employees at a reasonable cost to the employers.”24 Awarding Tarango formal vocational training under NRS 616C.530(4) and (5) diametrically opposes the express intent of our workers’ compensation scheme.
Specifically, NRS 616C.530(4) necessitates providing Tarango with formal vocational training that runs concurrent with his employment. The IRCA prohibits Tarango’s employment in the United States. Thus, SIIS would be required to provide training outside of Nevada. The NIIA was not intended as a means to expand the agency’s powers to award vocational benefits beyond the borders of Nevada — let alone the borders of the United States.25
Likewise, it is our view that dangerous precedent is set in *453allowing an undocumented worker to skip through the priority scheme directly to NRS 616C.530(5). Under this option, SIIS would be required to offer Tarango formal training for a different vocation outside the United States. However, it is clear that this training would only be available to Tarango because of his undocumented status. If he were a legal worker, this option would never become available.
More importantly, by allowing an undocumented worker to advance to NRS 616C.530(5) — without regard for his injuries— this court would be providing a pathway that would lead all injured undocumented workers to the most expensive remedy provided under the scheme. The formal vocational training “would bear no relationship to ‘medical eligibility,’ the extent of disability or need for retraining.”26 Not only would the costs of such training create an excessive burden on SIIS and the employers of Nevada, but it would also undermine the purpose behind Nevada’s workers’ compensation scheme.
Vocational rehabilitation was designed to provide methods to promptly return the employee to the workforce. But here, Tarango would not be using the scheme to return to his former or a similar job. Rather, he would be using Nevada’s workers’ compensation scheme as an avenue to a better career. This was not the intent of the legislature. The legislature intended a priority scheme to be established in order to provide efficiency and cost-effectiveness. “[W]hen the language of a statute is plain, its intention must be deduced from such language, and the court has no right to go beyond it.”27 As a result, we conclude that SIIS properly denied Tarango’s vocational rehabilitation claim because of his undocumented status.
It should be noted that Tarango also contends that SIIS’s denial of his vocational rehabilitation benefits violates the 14th Amendment. We disagree.
The 14th Amendment to the United States Constitution states that:
No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or *454property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.28
In analyzing the language of the 14th Amendment, the United States Supreme Court has recognized that aliens are considered “persons” for purposes under that amendment.29 Further, the Court has held that the amendment’s phrase “within its jurisdiction” emphasizes that the umbrella of equal protection covers “all within a State’s boundaries, and to all upon whom the State would impose the obligations of its laws.”30 Therefore, aliens — whether documented or undocumented — are to be provided such protections.31 And as a result, appellant contends that because SÓS is a governmental agency acting as an arm of the State of Nevada, it must comply with the Equal Protection Clause even when administering workers’ compensation benefits to undocumented workers. We agree.
In considering an equal protection challenge, the court must first determine the appropriate standard of review. This court’s standard for examining the validity of legislation under the Equal Protection Clause is the same as the federal standard.32 Thus, the proper standard of review depends on the classification to be considered, and the appropriate level of scrutiny to be applied to the affected interest.33
The highest level of scrutiny — strict scrutiny — is applied in cases involving fundamental rights or a suspect class.34 Under strict scrutiny, legislation should only be upheld if it is necessary to advance a compelling state interest, and it is narrowly tailored to achieve that interest.35
Comparatively, a lesser standard of review is required when the classification does not affect fundamental liberties.36 Under this *455level of scrutiny, legislation meets its burden of review so long as it is rationally related to a legitimate government interest.37 The “rational basis test” generally presumes that the law is constitutional, and thus, the courts show deference to the legislation.38
Between these two standards of review lies an intermediate level of scrutiny, which generally has been applied to matters of gender or illegitimacy.39
Appellant contends that the standard of review should meet that of a compelling state interest. Under the due process guarantee, the courts will require a compelling interest whenever laws distinguish persons based on classification.40 Thus, “classifications based on alienage, like those based on nationality or race, are inherently suspect and subject to close judicial scrutiny.”41 This court has applied similar reasoning in affording aliens the protection of strict scrutiny review.42
However, although we conclude that undocumented aliens have a right to equal protection under the 14th Amendment, the United States Supreme Court has “reject[ed] the claim that ‘illegal aliens’ are a ‘suspect class.’”43 To the contrary, entry into the undocumented alien classification is not done by some involuntary action such as entry into suspect classifications based on minority or origin. Rather, the Court has stated that “entry into this class, by virtue of entry into this country, is the product of voluntary action. Indeed, entry into the class is itself a crime.”44
As a result, the Plyler Court refused to acknowledge undocumented aliens as a suspect class, and in doing so, the Court stated that deference must be given to the legislature in determining classification schemes for those illegally in the United States.45 Further, the Court held that state legislation concerning those individuals must only include “some fair relationship to a legitimate public purpose.”46 Consequently, it is our view that state *456action disfavoring undocumented aliens with disparate treatment is not prohibited so long as the legislation is fairly related to a legitimate state purpose.47
Here, the priority scheme of NRS 616C.530 was designed by the legislature with the intent to efficiently return injured employees back into the workforce. If SIIS were required to offer Tarango vocational training merely because Tarango was illegally in the country, he would unfairly benefit from services prohibited to all legal workers solely because of his undocumented status.48 Such a consequence would result in disparate treatment of those lawfully entitled to work in Nevada, and would be in violation of the Equal Protection Clause since all those similarly situated must be treated in a like manner.49
Appellant Tarango is an undocumented alien. Unauthorized entry into the United States is a crime.50 Consequently, the United States Supreme Court has stated that benefits may be withheld “from those whose very presence within the United States is the product of their own unlawful conduct.”51 As a result, we conclude that SIIS’s denial of appellant’s vocational rehabilitation benefits was fairly related to a legitimate government purpose.
CONCLUSION
We conclude that the IRCA preempts Nevada’s workers’ compensation scheme insofar as it provides undocumented aliens with employment within the boundaries of the United States. Further, the legislature’s priority scheme under NRS 616C.530, and the Equal Protection Clause, preclude SIIS from awarding formal vocational training to undocumented workers. As a result of these conclusions, we affirm the order of the district court awarding *457appellant permanent partial disability, but denying appellant vocational rehabilitation benefits.
Young, Agosti, Rose and Becker, JJ., concur.8 U.S.C. § 1324a (1998).
NRS 616A.105 (emphasis added).
See Free v. Bland, 369 U.S. 663, 666 (1962).
See De Canas v. Bica, 424 U.S. 351, 354 (1976); see also Takahashi v. Fish & Game Comm’n, 334 U.S. 410, 419 (1948).
Plyler v. Doe, 457 U.S. 202, 219 n.19, 225 (1982) (citing De Canas, 424 U.S. 351).
U.S. Const, art. I, § 8, cl. 4.
See id.; Mathews v. Diaz, 426 U.S. 67, 81 n.17 (1976).
See Plylei; 457 U.S. at 225; see also Harisiades v. Shaughnessy, 342 U.S. 580 (1952).
Harisiades, 342 U.S. at 588-89.
Plyler, 457 U.S. at 225.
Mathews, 426 U.S. at 84.
Makahashi, 334 U.S. at 419.
See Dowling v. Slotnik, 712 A.2d 396, 404 (Conn. 1998).
8 U.S.C. § 1324a(h)(3).
See 8 U.S.C. § 1324a(a)(2).
See 8 U.S.C. § 1324a(e)(4), (f)(1).
NRS 616C.530.
Cramer v. Peavy, 116 Nev. 575, 580, 3 P.3d 665, 669 (2000) (quoting Cleghorn v. Hess, 109 Nev. 544, 548, 853 P.2d 1260, 1262 (1993)).
See City Council of Reno v. Reno Newspapers, 105 Nev. 886, 891, 784 P.2d 974, 977 (1989).
NRS 616C.530. “[I]n statutes, ‘may’ is permissive and ‘shall’ is mandatory unless the statute demands a different construction to carry out the clear intent of the legislature.” S.N.E.A. v. Daines, 108 Nev. 15, 19, 824 P.2d 276, 278 (1992).
Statutory interpretation should avoid absurd or unreasonable results. General Motors v. Jackson, 111 Nev. 1026, 1029, 900 P.2d 345, 348 (1995).
NRS 616C.530(4)-(5).
SIIS v. Miller, 112 Nev. 1112, 1118, 923 P.2d 577, 581 (1996). “SIIS is clearly a state agency for the following reasons: (1) it is subject to the approval and control of the Governor, the legislature, and other agencies of the government; (2) it is treated as the State or a state agency throughout the Nevada Revised Statutes; and (3) it possesses certain powers of a sovereign authority.” Northern Nev. Ass’n Injured Workers v. SIIS, 107 Nev. 108, 112-13, 807 P.2d 728, 731 (1991) (emphasis added) (footnotes omitted).
NRS 616A.010.
NRS 616C.580 states that “[e]xcept as otherwise provided in this section, vocational rehabilitation services must not be provided outside of this state.’ ’
Del Taco v. Workers’ Comp. App. Board, 94 Cal. Rptr. 2d 825, 828-29 (Cal. Ct. App. 2000).
Cirac v. Lander County, 95 Nev. 723, 729, 602 P.2d 1012, 1015 (1979) (quoting State ex rel. Hess v. The County Commissioners of Washoe County, 6 Nev. 104, 107 (1870)).
U.S. Const, art. XIV, § 1 (emphasis added).
See Plyler, 457 U.S. at 210.
Id. at 214.
See id.
See Laakonen v. District Court, 91 Nev. 506, 538 P.2d 574 (1975).
See Gaines v. State, 116 Nev. 359, 998 P.2d 166 (2000).
See id.
See id.
See id.
See Sereika v. State, 114 Nev. 142, 143-45, 955 P.2d 175, 179 (1998).
See Plyler, 457 U.S. at 216.
See Clark v. Jeter, 486 U.S. 456, 461 (1988).
See Graham v. Richardson, 403 U.S. 365, 371-72 (1971).
Id. at 372; see also U.S. v. Carolene Products Co., 304 U.S. 144, 152 n.4 (1938).
See State v. Chumphol, 97 Nev. 440, 441, 634 P.2d 451, 451 (1981).
Plyler, 457 U.S. at 219 n.19.
Id.
See id. at 216.
Id.
Id.
AU employees legally working in Nevada who could return to work in a modified role would be precluded from formal training. Based on the vocational rehabilitation priority scheme, NRS 616C.555(2) provides: “If the counselor determined . . . that the injured employee has existing marketable skills, the plan [for vocational rehabilitation benefits] must consist of job placement assistance only.” (Emphasis added.)
See Romer v. Evans, 517 U.S. 620, 631-35 (1996); see also Del Taco, 94 Cal. Rptr. 2d at 828-29. The Del Taco court concluded that awarding injured undocumented aliens vocational training not commensurate with injuries violated the Equal Protection Clause as to the employer as well as third parties not before the court. See id. Specifically, the court stated that requiring the employer to pay more in workers’ compensation for an undocumented worker who was injured than a legal worker solely because of immigration status was “irrational and arbitrary” and violated the Clause. Id.
See 8 U.S.C. § 1325(a).
Plyler, 457 U.S. at 219.