OPINION
Appellants Susan Combs, 1 Comptroller of Public Accounts of the State of Texas, and Greg Abbott, Attorney General of the State of Texas, 2 appeal from the trial court’s grant of summary judgment in favor of appellee STP Nuclear Operating Company (“STP”). In three issues, the Comptroller argues that the trial court erred in granting summary judgment in favor of STP because the State may properly collect independently procured insurance tax from STP consistent with Due Process, Equal Protection, and the McCar-ran-Ferguson Act. Alternatively, the Comptroller argues that, even if STP is not liable for the independently procured insurance tax, STP would be liable for unauthorized insurance tax. For the reasons discussed below, we reverse the trial court’s judgment and render judgment in favor of the Comptroller.
FACTS AND PROCEDURAL BACKGROUND
STP is a Texas corporation that maintains its principal place of business in Ma-tagorda County. STP operates the South Texas Nuclear Project on behalf of its owners-the City of San Antonio, the City of Austin, and NRG South Texas, L.P., formerly Texas Genco, LLP. As a condition of receiving a license to operate the plant from the Nuclear Regulatory Commission, STP is required to carry primary and excess property insurance. STP procures this insurance from Nuclear Electric Insurance Limited (“NEIL”). 3
NEIL is a mutual insurance company composed of all of the utility companies who own or operate nuclear power plants in the United States. NEIL is incorporated in Bermuda and headquartered in Delaware. NEIL is not licensed to conduct the business of insurance in Texas or any other state except Delaware. 4 Even though *268 NEIL insures nuclear power plants across the United States, NEIL has developed “Operating Procedures” to avoid state insurance laws and regulations. For example, NEIL may conduct business meetings in any state, but these meetings “shall not include any activities which could be viewed as conducting the business of insurance, for example ... soliciting new insurance business or negotiating policy terms with prospective insureds.” NEIL’s Operating Procedures require its insureds to comply with the exemptions provided in state law wherever necessary to protect NEIL from running afoul of state unauthorized insurance laws. All of NEIL’s insureds must follow the Operating Procedures to obtain coverage.
Many states provide various exemptions from state unauthorized insurance laws. Examples of these exemptions include the “independently procured,” “industrial insured,” and “nuclear insured” exemptions. These exemptions allow insurance companies, like NEIL, to conduct the business of insurance within a particular state without satisfying all of that state’s licensing and regulatory requirements. In Texas, the legislature has provided an “independently procured” exemption. See Tex. Ins.Code Ann. § 101.053(b)(4) (West Supp.2006). To satisfy this exemption, STP must report the insurance transaction and pay the premium tax due under chapter 226 of the insurance code. Id. As one of NEIL’s insureds, STP is required by NEIL’s Operating Procedures to pay any premium taxes due in Texas in order to maintain NEIL’s “independently procured” exemption from state unauthorized insurance laws. 5 STP paid premium taxes as required under section 101.053(b)(4) and chapter 226 of the Texas Insurance Code for the 2002, 2003, and 2004 calendar years. 6 For each of these three years, STP paid the independently procured insurance tax under protest. In 2003, STP filed suit against the Comptroller seeking a refund of its tax payment for 2002 on the grounds that the independently procured insurance tax was unconstitutional and violated the McCarran-Ferguson Act. STP later amended its petition to include a refund request for its tax payment for 2003. Then, in 2005, STP filed a separate suit against the Comptroller seeking a refund of its tax payment for 2004.
The trial court consolidated both suits, and the parties filed cross-motions for summary judgment. The trial court granted STP’s motion for summary judgment and denied the Comptroller’s motion for summary judgment finding that the independently procured insurance tax violated the McCarran-Ferguson Act.
ANALYSIS
On appeal, the Comptroller argues that the trial court erred in granting summary judgment in favor of STP because the Comptroller may properly collect the independently procured insurance tax from STP without violating federal law or the Constitution. Alternatively, the Comptroller argues that even if STP is not liable for the independently procured insurance tax, STP would be hable for unauthorized insurance tax. STP counters that the trial court’s summary judgment was proper and consistent with Supreme Court precedent
*269
in
State Board of Insurance v. Todd Shipyards Corp., 370
U.S. 451,
82 S.Ct.
1380,
Standard of Review
We review the trial court’s grant of summary judgment
de novo. Valence Operating Co. v. Dorsett,
State Regulation and Taxation of Insurance Activities
We begin with the premise that a state may exercise its police power to regulate and tax the business of insurance, including those insurance activities and transactions occurring within its borders. McCarran-Ferguson Act, 15 U.S.C.A. §§ 1011-12 (West 1997).
7
Before and after the passage of the McCarran-Fergu-son Act, the Supreme Court confirmed that a state may regulate and tax insurance activities occurring within its borders.
See, e.g., Hoopeston Canning Co. v. Cullen,
The Texas Insurance Code provides that no one shall engage in the business of insurance without authorization by statute. Tex. Ins.Code Ann. § 101.102(a) (West Supp.2006). Section 101.051 of the insurance code defines those activities that constitute the business of insurance. Id. § 101.051 (West Supp.2006). These activities are set forth in sections 101.051(b) and (c), and they include:
(1) making or proposing to make, as an insurer, an insurance contract;
(2) making or proposing to make, as guarantor or surety, a guaranty or suretyship contract as a vocation *270 and not merely incidental to another legitimate business or activity of the guarantor or surety;
(3) taking or receiving an insurance application;
(4) receiving or collecting any consideration for insurance, including:
(A) a premium;
(B) a commission;
(C) a membership fee;
(D) an assessment; or
(E) dues;
(5) issuing or delivering an insurance contract to:
(A) a resident of this state; or
(B) a person authorized to do business in this state;
(6) directly or indirectly acting as an agent for or otherwise representing or assisting an insurer or person in:
(A) soliciting, negotiating, procuring, or effectuating insurance or renewal of insurance;
(B) disseminating information relating to coverage or rates;
(C) forwarding an insurance application;
(D) delivering an insurance policy or contract;
(E) inspecting a risk;
(F) setting a rate;
(G) investigating or adjusting a claim or loss;
(H) transacting a matter after the effec-tuation of the contract that arises out of the contract; or
(I) representing or assisting an insurer or person in any other manner in the transaction of insurance with respect to a subject of insurance that is resident, located, or to be performed in this state;
(7) contracting to provide in this state indemnification or expense reimbursement for a medical expense by direct payment, reimbursement, or otherwise to a person domiciled in this state or for a risk located in this state, whether as an insurer, agent, administrator, trust, or funding mechanism or by another method;
(8) doing any kind of insurance business specifically recognized as constituting insurance business within the meaning of statutes relating to insurance;
(9) doing or proposing to do any insurance business that is in substance equivalent to conduct described by Subdivisions (l)-(8) in a manner designed to evade statutes relating to insurance; or
(10) any other transaction of business in this state by an insurer.
Id. § 101.051(b) (West Supp.2006). In addition, section 101.051(c) provides:
An act described by Subsection (b) by an unlicensed or unauthorized person or insurer that occurs in this state and that affects a person in another state or jurisdiction constitutes the business of insurance in this state.
Id. § 101.051(c).
By engaging in any of the activities listed in sections 101.051(b) and (c), an insurance company subjects itself to regulation and taxation in Texas unless it meets the statutory requirements for an exemption. Section 101.053(b) sets forth eight transactions that do not constitute the business of insurance in Texas and are, therefore, exempt from State regulation. Section 101.053(b)(4) establishes the independently procured insurance exemption. To qualify for this exemption, four requirements must be met: (1) the insurance policy must be independently procured; (2) the negotiations must occur entirely outside the State of Texas; (3) the insurance transaction must be reported to the Texas Department
*271
of Insurance; and (4) the premium tax must be paid as required by chapter 226 of the insurance code.
Id.
§ 101.053(b)(4). An insurance transaction that meets these requirements is not subject to regulation by the Texas Department of Insurance.
Risk Managers,
In addition to the various regulatory requirements imposed under state law, Texas also imposes a variety of taxes on insurance premiums.
See generally
Tex. Ins.Code Ann. §§ 221-26 (West Supp. 2006). In most cases, the taxes are imposed on and paid by insurers licensed to do business in Texas.
Lexington Ins. Co. v. Strayhom,
Texas also imposes a similar tax on independently procured insurance.
Id.
§ 226.052. Like the tax imposed on policies issued by unauthorized insurers, the premium tax imposed on independently procured insurance is 4.85%.
Id.
§ 226.053. The insured, and not the insurer, is hable for the independently procured insurance tax.
Id.
§ 226.054. This is consistent with the notion that independently procured insurance is actually an exception to the State’s laws regulating the business of insurance.
Risk Managers,
Challenges to Independently Procured Insurance Tax
Relying on the Supreme Court’s holding in Todd Shipyards and this Court’s holding in Dow Chemical, STP argues that the independently procured insurance tax violates Due Process and the McCarran-Fer-guson Act. STP also urges us to affirm the trial court’s grant of summary judgment because the independently procured insurance tax violates the Equal Protection Clauses of the United States and Texas Constitutions, see U.S. Const, amend. XIV, §§ 1-2, and Tex. Const, art. I, § 3, and the Equal and Uniform Clause of the Texas Constitution, see Tex. Const, art. VIII, § 1. STP further contends that the Comptroller’s system of taxation is arbitrary and capricious and has no basis in law.
In determining whether a statute is constitutional, we presume that the statute is valid and that the legislature was neither unreasonable nor arbitrary in enacting it. Tex. Gov’t Code Ann. § 311.021 (West 2005);
Texas Pub. Bldg. Auth. v. Mattox,
1. Due Process and McCarran-Fergu-son Act
This Court has considered the independently procured insurance exemption and tax on at least three separate occasions.
See Dow Chemical,
*272
In
Todd Shipyards,
we concluded that an out-of-state corporation licensed to do business in Texas was not liable for the independently procured insurance tax because the only connection between Texas and the insurance transaction at issue was the physical location in Texas of the property covered by the insurance policy.
After the Texas Supreme Court denied the application for writ of error, the United States Supreme Court affirmed our holding in
Todd Shipyards,
In
Allgeyer,
the Court invalidated on Due Process grounds a Louisiana statute that made it a misdemeanor to contract for insurance on Louisiana risks with an insurance company not licensed to do business in Louisiana, where the insured contracted for the policy through the use of the mails.
*273
Over thirty years later, this Court again had occasion to consider the constitutionality of the independently procured insurance statute in
Risk Managers
and
Dow Chemical.
Discerning no difference between the facts in
Todd Shipyards
and the facts in
Dow Chemical,
this Court held that the independently procured insurance tax violated the McCarran-Ferguson Act.
Dow Chemical,
In
Risk Managers,
however, we concluded that the facts in
Todd Shipyards
were different from those presented in
Risk Managers.
Reviewing the record and the summary judgment evidence presented by the parties in this case, we conclude that the independently procured insurance tax as applied to STP does not violate either Due Process or the McCarran-Ferguson Act. STP is a Texas corporation headquartered in Matagorda County. For each of the calendar years at issue, STP’s supervisor of corporate insurance, who offices in Ma-tagorda County, testified that he “personally supervised the procurement of the policies of insurance procured from NEIL.” 9 There is also evidence in the record of direct communications via e-mail and letters between NEIL and STP regarding the insurance contracts at issue. 10 The insurance contracts at issue were negotiated and approved by STP’s employees in Texas. Premium payments, although transferred to NEIL via STP’s Delaware representative, originated in Texas. And losses are payable to the owners of the South Texas Nuclear Project in Texas. We conclude that the independently procured insurance tax as applied to the transaction at issue here does not violate either Due Process or the McCarran-Fer-guson Act. 11
2. Equal Protection/Equal and Uniform Taxation
*275
STP argues that the independently procured insurance tax violates the Equal Protection Clauses of the United States and Texas Constitutions, as well as the Equal and Uniform Clause of the Texas Constitution. U.S. Const, amend. XIV, § 2; Tex. Const, arts. I, § 3; VIII, § l.
12
Specifically, STP contends that the Comptroller discriminates against foreign corporations in her assessment and collection of the tax. We evaluate equal protection challenges under the Texas Constitution using the same standard for equal protection challenges brought under the federal Constitution.
See Barshop v. Medina County Underground Water Conservation Dist.,
The crux of STP’s claim is not that the Comptroller has discriminated against similarly situated corporations, but rather that the Comptroller has selectively enforced the independently procured insurance tax only against domestic corporations and “has essentially ceased enforcement actions ... against foreign corporations.”
13
To establish a claim of selective or discriminatory enforcement, STP must show that it has been singled out for prosecution while others similarly situated and committing the same acts have not.
State v. Malone Serv. Co.,
We conclude that STP has failed to meet its required burden to establish a claim of selective enforcement. STP is a Texas corporation, and STP has presented no *276 evidence showing that the Comptroller has selectively enforced the independently procured insurance tax only against other Texas corporations. Indeed, the summary judgment evidence reveals that several foreign corporations continued to pay the independently procured insurance tax throughout the tax years in issue. ■ To the extent STP claims that the Comptroller has ceased enforcement efforts against foreign corporations, STP cannot establish a claim of discriminatory enforcement because, as a domestic corporation, STP is not similarly situated to foreign corporations. STP’s assertions that the Comptroller has enforced the independently procured insurance tax against some and not others do not establish a selective or discriminatory enforcement claim.' See id. Accordingly, STP has failed to establish an equal protection violation of the United States or Texas Constitutions, much less a violation of the equal and uniform provision of the Texas Constitution.
3. Arbitrary and Capricious
In its final argument, STP argues that the statutory scheme imposing the independently procured insurance tax is arbitrary and capricious and unconstitutionally vague because it does not “give[ ] an insured fair notice of its applicability at the time the transaction occurs” and the Comptroller has not provided a consistent explanation of when the tax will apply. We disagree.
As with STP’s other constitutional challenges, we presume that the independently procured insurance tax statute is constitutional. Tex. Gov’t Code Ann. § 311.021;
Texas Pub. Bldg. Auth.,
The insurance code expressly provides that independently procured insurance involves a transaction whereby the insured independently procures an insurance contract “from an insurance company not authorized to do insurance business in this state through negotiations occurring entirely outside this state.” Tex. Ins.Code Ann. § 101.053(b)(4). We have previously construed independently procured insurance as an exemption from the state’s unauthorized insurance laws.
Risk Managers,
STP does not dispute these statutory requirements, nor does STP argue that these statutory requirements are arbitrary and cápricious or unconstitutionally vague. Rather, STP argues that the Comptroller has promulgated different reporting forms for the independently procured insurance tax and has used different instructions on these forms for each of the tax years at issue. 14 Importantly, however, STP does *277 not argue that the Comptroller’s instructions differ from the statutory requirements in section 101.058 of the insurance code. After reviewing the Comptroller’s instructions on the reporting forms for each of the tax years in issue, we conclude that the Comptroller’s instructions mirror the statutory requirements in section 101.058 of the insurance code. Because STP does not argue that the statutory requirements are unconstitutionally vague and the Comptroller’s instructions mirror the statutory requirements, STP fails to establish that the statutory scheme is arbitrary or capricious or unconstitutionally vague.
CONCLUSION
Having reviewed the record and the summary judgment evidence presented, we conclude that the trial court erred in granting summary judgment in favor of STP. We further conclude that there are no disputed issues of material fact and, therefore, the Comptroller has demonstrated that it is entitled to judgment as a matter of law. Accordingly, we reverse the trial court’s judgment and render judgment in favor of the Comptroller.
Notes
. We substitute Susan Combs, in her official capacity, as successor to Carole Keeton Stray-horn, Comptroller of Public Accounts of the State of Texas. See Tex.R.App. P. 7.
. Because the interests of the Comptroller and the Attorney General are aligned, we refer to the appellees collectively as the "Comptroller.”
. It is undisputed that NEIL is currently the only insurer who underwrites insurance for nuclear power plants in the United States.
. NEIL is a registered insurer under the Captive Insurance Companies Act of Delaware. See Del.Code Ann. tit. 18, §§ 6901-17 (2004), repealed by 75 Del. Laws, c. 150 (2005), mow Del.Code Ann. tit. 18, §§ 6901-63 (2006).
. The record reflects that NEIL requires its insureds to pay premium taxes in nine states, including California, Connecticut, Georgia, Maryland, Missouri, New Hampshire, Pennsylvania, Texas and Wisconsin.
. STP paid taxes in the amount of $115,287.80 for the year ending December 31, 2002; $125,848.14 for the year ending December 31, 2003; and $154,235.67 for the year ending December 31, 2004.
. Congress enacted the McCarran-Ferguson Act in 1945 in response to the Supreme Court's holding in
United States v. SouthEastern Underwriters Association,
. There is no indication in either the opinion by this Court or the opinion by the Supreme Court that the independently procured insur-anee tax statute was invalidated on its face.
State Bd. of Ins. v. Todd Shipyards Corp.,
There are two types of constitutional challenges-facial and as-applied. Michael C. Dorf,
Facial Challenges to State and Federal Statutes,
46 Stan. L.Rev. 235, 236 (1994). Facial challenges to the constitutionality of a statute are disfavored and generally permitted only in the context of the First Amendment.
National Endowment for the Arts v. Finley,
Todd Shipyards’ claim "does not fit within the case law allowing courts to entertain facial challenges” because neither in this Court, nor in the Supreme Court, did Todd Shipyards seek to rely on the effect of the tax on other parties not before the court.
See Los Angeles Police Dep’t v. United Reporting Publ’g Corp.,
. The summary judgment record includes two affidavits: one from Ronald Hyde, the supervisor of corporate insurance for 2003 and 2004, and one from Gerald Wilson, STP’s supervisor of corporate insurance for 2002. Both Hyde and Wilson stated that they personally supervised the procurement of insurance from NEIL.
. Although some of these communications were passed through STP’s agent in Delaware, this does not alter our analysis. Tex. Ins.Code Ann. § 101.051(b)(6)(A) (West Supp. 2006) (providing that the business of insurance includes, among other activities, "directly or indirectly acting as an agent for or otherwise representing or assisting an insurer or person in ... soliciting, negotiating, procuring, or effectuating insurance or a renewal of insurance”);
see also Illinois Commercial Men’s Ass’n v. State Bd. of Equalization,
.Given our holding that the independently procured insurance tax as applied to the facts in this case does not violate Due Process or the McCarran-Ferguson Act, we do not reach the Comptroller's alternative argument that STP is liable for the unauthorized insurance tax.
. The United States Constitution precludes the State from making or enforcing any law that "deprive[s] any person of life, liberty, or property without due process of law; nor deny to any person ... equal protection of the laws.” U.S. Const, amend. XIV, § 2. Article I, section 3 of the Texas Constitution states, “All free men, when they form a social compact, have equal rights, and no man, or set of men, is entitled to exclusive separate public emoluments, or privileges, but in consideration of public services.” Tex. Const, art. I, § 3. The Texas Supreme Court generally refers to this provision as an "equal protection guarantee.”
Barshop v. Medina County Underground Water Conservation Dist.,
. Claims of selective or discriminatory enforcement fall within the scope of the constitutional guarantee of equal protection under the law. U.S. Const, amend. XIV, § 2; Tex. Const, art. I, § 3;
see generally Yick Wo v. Hopkins,
. We reject STP’s claim that the statutory scheme is vague because STP did not know whether its conduct in procuring insurance from NEIL required it to pay independently procured insurance tax.
“A
statute is not unconstitutionally vague merely because a company ... can raise uncertainty about its application to the facts of their case.”
Ford
*277
Motor Co. v. Texas Dep't of Transp.,
