OPINION
Opinion By
Does a Texas district court have subject-matter jurisdiction over a divorce case arising from a same-sex marriage that oc *659 curred in Massachusetts? The trial court held that it had jurisdiction and that article I, section 82(a) of the Texas Constitution and section 6.204 of the Texas Family-Code, which limit marriage to opposite-sex couples, violate the Equal Protection Clause of the Fourteenth Amendment. We hold that Texas district courts do not have subject-matter jurisdiction to hear a same-sex divorce case. Texas’s laws compelling this result do not violate the Equal Protection Clause of the Fourteenth Amendment.
Accordingly, we reverse the trial court’s order and remand with instructions to dismiss the case for lack of subject-matter jurisdiction. We also conditionally grant the State’s petition for writ of mandamus to correct the trial court’s erroneous striking of the State’s petition in intervention.
I. Background
Appellee filed a petition for divorce in Dallas County in which he sought a divorce from H.B., whom appellee alleged to be his husband. Appellee alleged that he and H.B. were lawfully married in Massachusetts in September 2006 and moved to Texas in 2008. Appellee further alleged that he and H.B. “ceased to live together as husband and husband” in November 2008.
Appellee alleged in his divorce petition that there are no children of the marriage, born or adopted, and he requested a division of community property if a property-division agreement could not be reached. He prayed for a divorce, that his last name be changed back to his original last name, and “for general relief.” The record contains no answer by H.B.
A few days after appellee filed suit, the State intervened in the action “as a party respondent to oppose the Petition for Divorce and defend the constitutionality of Texas and federal law.” The Texas laws in question are article I, section 82(a) of the Texas Constitution and section 6.204 of the Texas Family Code. The federal law in question is the Defense of Marriage Act (DOMA), 28 U.S.C. § 1738C. 1 The State alleged that appellee is not a party to a “marriage” under Texas law, that he is therefore not eligible for the remedy of divorce, and that the trial court cannot grant a divorce without violating Texas law. At the end of its petition in intervention, the State prayed for dismissal of the petition for divorce.
Several weeks later, the State filed a plea to the jurisdiction in which it asserted, inter alia, that the trial court lacked subject-matter jurisdiction because appel-lee’s petition demonstrated on its face that he and H.B. were not “married” as a matter of Texas law. The State asserted that section 6.204(c) of the family code “strips courts of jurisdiction” to confer the legal status of marriage upon any relationship besides the union of one man and one woman — even if only for the purpose of granting a divorce.
The trial court denied the State’s plea to the jurisdiction without a hearing. In its order, the court concluded that article I, section 32(a) of the Texas Constitution and section 6.204 of the family code violate the Equal Protection Clause of the Fourteenth Amendment. It further concluded that it *660 had jurisdiction “to hear a suit for divorce filed by persons legally married in another jurisdiction and who meet the residency and other prerequisites required to file for divorce in Dallas County, Texas.” It ordered “that Intervenor’s Plea to the Jurisdiction is denied and that the Intervention filed by the Office of the Attorney General is hereby stricken.” The State filed its notice of interlocutory appeal the day after the trial court signed the order. A few days later, the State filed its Conditional Petition for Writ of Mandamus in this Court seeking relief from the part of the trial court’s order striking its petition in intervention.
Within twenty days after the court signed the order, appellee filed a request for findings of fact and conclusions of law. The State opposed the request. A few weeks later, the trial court signed both a set of findings of fact and conclusions of law and an amended order denying the State’s plea to the jurisdiction. In the amended order, the court made no reference to article I, section 32 of the Texas Constitution, concluded that section 6.204 of the family code violated several provisions of the federal Constitution in addition to the Equal Protection Clause, and concluded that the State lacked both constitutional and statutory authority to intervene. The amended order concluded, “Therefore, the State’s Plea to the Jurisdiction is denied and the Intervention filed by the Office of the Attorney General is hereby stricken.”
We have consolidated the State’s mandamus proceeding with its interlocutory appeal.
II. Mandamus Relief From Order Striking Intervention
To obtain mandamus relief from the order striking its intervention, the State must meet two requirements. It must show that the trial court clearly abused its discretion and that the State has no adequate remedy by appeal.
In re Prudential Ins. Co. of Am.,
We agree with the State that the trial court clearly abused its discretion by striking the State’s intervention sua sponte. Texas Rule of Civil Procedure 60 provides, “Any party may intervene by filing a pleading, subject to being stricken out by the court for sufficient cause
on the motion of any party.”
Tex.R. Civ. P. 60 (emphasis added). The court abuses its discretion by striking an intervention in the absence of a motion to strike.
Guar. Fed. Sav. Bank v. Horseshoe Operating Co.,
The foregoing analysis also disposes of appellee’s argument that the trial court did not abuse its discretion by striking the State’s intervention because the office of the attorney general has no justi-ciable interest in the case. Lack of a justiciable interest to intervene must be raised by a motion to strike or the defense is waived.
Bryant v. United Shortline Inc. Assur. Servs., N.A.,
We also agree with the State that it has no adequate remedy by appeal. This second prong of the test for mandamus relief has no comprehensive definition but calls for “the careful balance of jurisprudential considerations.”
In re Prudential Ins. Co.,
Mandamus review of significant rulings in exceptional cases may be essential to preserve important substantive and procedural rights from impairment or loss, allow the appellate courts to give needed and helpful direction to the law that would otherwise prove elusive in appeals from final judgments, and spare private parties and the public the time and money utterly wasted enduring eventual reversal of improperly conducted proceedings.
Id. The balancing of detriments and benefits is practical and prudential. Id.
In this case, the benefits of mandamus review outweigh the detriments. This is an exceptional case that involves not only basic principles of subject-matter jurisdiction but also the constitutionality of Texas’s laws concerning marriage. The trial court’s order striking the State’s petition in intervention potentially interferes with the State’s important right to be heard on the constitutionality of its statutes and its statutory right to pursue an interlocutory appeal of the denial of its plea to the jurisdiction.
See
Tex. Civ. Prac. & Rem.Code Ann. § 37.006(b) (Vernon 2008) (requiring attorney general to be given notice of any proceeding in which a statute is alleged to be unconstitutional);
id.
§ 51.014(a)(8) (authorizing interlocutory appeal from denial of plea to the jurisdiction by a governmental unit);
see also Wilson v. Andrews,
As compared to these benefits, the detriments of mandamus review in this case are not substantial. Mandamus review of the order in question does not require this Court to dedicate its resources to a routine or unimportant matter. Rather, in the absence of mandamus review, our consideration of issues that are important both to this litigation and to the law of this state would be impeded. Moreover, any additional expense that mandamus review imposes on the parties is offset by the savings of time and expense that will be gained by prompt appellate consideration of the State’s jurisdictional challenge.
We hold that the trial court clearly abused its discretion by striking the State’s intervention and that the State lacks an adequate remedy by appeal. Accordingly, we conditionally grant mandamus relief with respect to the order striking the State’s intervention.
III. INTERLOCUTORY APPEAL
A plea to the jurisdiction contests a trial court’s subject-matter jurisdiction.
Dallas Fort Worth Int’l Airport Bd. v. Cox,
Determinations of questions of law are reviewed de novo.
Hoff v. Nueces Cnty.,
The State asserts that we should disregard the trial court’s amended order denying the State’s plea to the jurisdiction because it was signed during the automatic stay under section 51.014(b) of the civil practice and remedies code. We agree. When the State commenced this interlocutory appeal by filing its notice of appeal, “all other proceedings in the trial court” were stayed pending resolution of the appeal. Tex. Civ. Prac. & Rem.Code Ann. § 51.014(b). An order signed during a stay is a “legal nullity.”
Amrhein v. La Madeleine, Inc.,
IV. Texas Courts Lack Subject-Matter Jurisdiction Over Same-Sex Divorce Cases
A. The Texas Constitution and Texas Family Code
The Texas Constitution was amended in 2005 to provide as follows:
*663 (a) Marriage in this state shall consist only of the union of one man and one woman.
(b) This state or a political subdivision of this state may not create or recognize any legal status identical or similar to marriage.
Tex. Const, art. I, § 32.
Under the Texas Family Code, the term “suit for dissolution of marriage” encompasses three distinct kinds of suits: suits for divorce, suits for annulment, and suits to declare a marriage void. Tex. Fam.Code Ann § 1.003 (Vernon 2006); see also id. §§ 6.001-.206 (Vernon 2006 & Supp.2009). In 2003, the legislature declared that same-sex marriages are void by adopting section 6.204, which provides in pertinent part as follows:
(b) A marriage between persons of the same sex or a civil union is contrary to the public policy of this state and is void in this state.
(c) The state or an agency or political subdivision of the state may not give effect to a:
(1) public act, record, or judicial proceeding that creates, recognizes, or validates a marriage between persons of the same sex or a civil union in this state or in any other jurisdiction; or
(2) right or claim to any legal protection, benefit, or responsibility asserted as a result of a marriage between persons of the same sex or a civil union in this state or in any other jurisdiction.
Id. § 6.204(b)-(c) (Vernon 2006). Even before the adoption of section 6.204, the family code provided, “A [marriage] license may not be issued for the marriage of persons of the same sex.” Id. § 2.001(b). The statute governing informal marriage also characterizes the relationship as a “marriage of a man and woman.” Id. § 2.401(a).
Appellee did not plead for a declaration of voidness. Rather, he sought a divorce on the ground of insupportability. His petition tracks the language of section 6.001, which provides:
On the petition of either party to a marriage, the court may grant a divorce without regard to fault if the marriage has become insupportable because of discord or conflict of personalities that destroys the legitimate ends of the marital relationship and prevents any reasonable expectation of reconciliation.
Id.
§ 6.001. A divorce based on this provision is commonly known as a “no-fault divorce.”
See, e.g., Waite v. Waite,
B. The Law of Subject-Matter Jurisdiction
“Jurisdiction refers to the power of a court, under the constitution and laws, to determine the merits of an action between the parties and render judgment.”
Ysasaga v. Nationwide Mut. Ins. Co.,
The trial court in this case is a district court, so the starting presumption is that it possesses subject-matter jurisdiction over the case. This is because “Texas district courts are courts of general jurisdiction with the power to hear and determine any cause that is cognizable by courts of law or equity and to grant any relief that could be granted by either courts of law or equity.”
Thomas v. Long,
A Texas trial court may lack subject-matter jurisdiction over a particular case or claim for a variety of reasons, such as immunity from suit,
Harris Cnty. v. Sykes,
C. The Parties’ Contentions
The State argues that section 6.204(c) of the family code and section 32(b) of article I of the Texas Constitution strip Texas trial courts of jurisdiction in same-sex-divorce cases because adjudicating the merits of such a case would recognize or “give effect to a ... right or claim” based on a same-sex marriage. Under the Texas Constitution, the state cannot “create or recognize” marriages other than between one man and one woman. Tex. Const, art. I, § 32(b). Under section 6.204(c) of the Texas Family Code, the state cannot “give effect to a ... right or claim to any legal protection, benefit, or responsibility asserted as a result of a marriage between persons of the same sex.” Tex. Fam.Code Ann. § 6.204(c)(2). Appellee’s principal response is that the trial court does not adjudicate or establish the validity of a marriage in a divorce case, and thus a divorce case does not recognize or give effect to a same-sex marriage formed in another jurisdiction. Appellee also urges us to apply the “place-of-celebration test” and conclude that he and H.B. are validly married for the limited purpose of adjudicating his divorce petition.
D. Application of Texas Law
In construing a statute, our objective is to ascertain and effectuate the legislature’s
*665
intent. Our starting point is the plain and ordinary meaning of the words of the statute. If a statute’s meaning is unambiguous, we generally enforce it according to its plain meaning. We read the statute as a whole and interpret it so as to give effect to every part.
City of San Antonio v. City of Boerne,
Section 6.204(b) declares same-sex marriages void and against Texas public policy. Tex. Fam.Code Ann. § 6.204(b). “Void” means having no legal effect.
In re Calderon,
Next, section 6.204(c)(1) provides that Texas and its agencies and subdivisions may not give any effect to any public act, record, or judicial proceeding that creates, recognizes, or validates a same-sex marriage “in this state or in any other jurisdiction.” Thus, section 6.204(c)(1) amplifies section 6.204(b) by providing explicitly that the rule of voidness applies even to same-sex marriages that have been recognized by another jurisdiction. Further, section 6.204(c)(1) mandates that Texas courts may not give any legal effect whatsoever to a public act, record, or judicial proceeding that validates a same-sex marriage. See also Tex. Const. art. I, § 32. In the case before us, appellee attached his Massachusetts marriage certificate to his divorce petition. Section 6.204(c)(1), which addresses “any public act, record, or judicial proceeding” that “creates, recognizes, or validates a same-sex marriage” in another jurisdiction, in this case, Massachusetts, provides the trial court may not give any legal effect to this document. Thus, section 6.204(c)(1) precludes any use of the marriage certificate in this case.
Section 6.204(c)(2) forbids the state and its subdivisions from giving any effect to a “right or claim to any legal protection, benefit, or responsibility asserted as a result of a” same-sex marriage. Thus, the State may not give any legal effect even to a claim to a protection or benefit predicated on a same-sex marriage. A petition for divorce is a claim — that is, “a demand of a right or supposed right,” Webster’s Third New International Dictionary Unabridged 414 (1981) — to legal protections, benefits, or responsibilities “asserted as a result of a marriage,” Tex. Fam.Code Ann. § 6.204(c)(2), one example of such a benefit being community-property rights. Under section 6.204(c)(2), the State cannot give any effect to such a petition when it is predicated on a same-sex marriage. If a trial court were to exercise subject-matter jurisdiction over a same-sex divorce petition, even if only to deny the petition, it would give that petition some legal effect in violation of section 6.204(c)(2). In order to comply with this statutory provision and accord appellee’s same-sex divorce petition no legal effect at all, the trial court must not address the merits. In other words, the court must dismiss for lack of subject-matter jurisdiction.
See Ysasaga,
Thus, in the instant case, section 6.204(c) precludes a trial court from giving any legal effect to appellee’s petition for divorce and all supporting documentation, and it deprives the trial court of subject-matter jurisdiction.
Our holding that section 6.204(c) is a jurisdictional bar is consistent with
Mireles v. Mireles,
wherein Jennifer Jack
*666
married and divorced Andrew Míreles. No. 01-08-00499-CV,
Appellee contends that adjudicating a same-sex divorce does not “give effect” to a same-sex marriage because a divorce decree does not establish the validity of the marriage as against third parties. The Texas Constitution and section 6.204 of the Texas Family Code, however, forbid the State and its agencies from giving
any effect whatsoever
to a same-sex marriage. Thus, in order to prevail, appellee must show that a same-sex divorce gives no effect at all to the purported same-sex marriage. He cannot do so. A same-sex divorce proceeding would give effect to the purported same-sex marriage in several ways. For one, it would establish the validity of that marriage as to the parties involved under principles of res judicata and collateral estoppel. See
Gray v. Gray,
Furthermore, a divorce proceeding would “give effect” to a same-sex marriage. The inherent nature of a divorce proceeding requires both a respondent *667 whom the petitioner seeks to divorce and a legally recognized relationship between the parties that the petitioner seeks to alter. An obvious purpose and function of the divorce proceeding is to determine and resolve legal obligations of the parties arising from or affected by their marriage. A person does not and cannot seek a divorce without simultaneously asserting the existence and validity of a lawful marriage. Texas law, as embodied in our constitution and statutes, requires that a valid marriage must be a union of one man and one woman, and only when a union comprises one man and one woman can there be a divorce under Texas law.
Appellee argues in the alternative that if the adjudication of his divorce action “gives effect” to a same-sex marriage, then the adjudication of a suit to declare his marriage void under section 6.307 of the family code would as well. Appellee points out that the family code authorizes the trial court to grant various forms of relief, such as temporary restraining orders and name changes, in any kind of suit for dissolution of marriage, whether the ultimate relief sought is a divorce, an annulment, or a declaration of voidness.
See
Tex. Fam.Code Ann. §§ 6.501, 45.105(a) (Vernon 2006
&
2008). There is also some authority that courts may order property divisions in voidness suits.
See Hovious v. Hovious,
No. 2-04-169-CV,
We conclude that Texas courts have no subject-matter jurisdiction to adjudicate a divorce petition in the context of a same-sex marriage. 2 Thus, the trial court had no subject-matter jurisdiction to adjudicate appellee’s petition for divorce.
E. Comity
Appellee argues that the trial court possesses subject-matter jurisdiction based on principles of comity because he was legally married in Massachusetts. Appellee further contends that Texas courts have long *668 employed the comity-based “place-of-celebration rale” to determine whether a foreign marriage is valid for purposes of hearing a divorce, and that we should continue to apply that rule. He also cites cases from New York in which courts have entertained same-sex-divorce cases even though New York does not recognize same-sex marriages.
“Comity is a principle under which the courts of one state give effect to the laws of another state or extend immunity to a sister sovereign not as a rule of law, but rather out of deference or respect.”
Hawsey v. La. Dep’t of Soc. Servs.,
Appellee misconstrues the solidity of the place-of-celebration rule in Texas jurisprudence. In one of the more recent cases on point, the court rejected the place-of-celebration rule in favor of the most-substantial-relationship test and, based largely on Texas public policy, applied Texas law to ascertain the validity of marriages and divorces that took place in other countries.
Seth v. Seth,
Moreover, Texas has repudiated the place-of-celebration rule with respect to same-sex unions on public-policy grounds. The Texas Constitution provides that “[mjarriage in this state shall consist only of the union of one man and one woman.” Tex. Const, art. I, § 32(a). The rule contains no exceptions for marriages performed in other jurisdictions, nor is its application limited to marriages performed in this state. Any common-law principle recognizing same-sex marriages performed in other jurisdictions must yield to the constitution. Moreover, the legislature has declared that same-sex marriages are contrary to Texas public policy. Tex. Fam. Code Ann. § 6.204(b). We do not extend comity to the laws of other states if doing so would result in a violation of Texas public policy.
K.D.F. v. Rex,
Appellee has referred us to several recent New York cases that reach a different result, but Texas’s specific constitutional and statutory provisions addressing same-sex marriage make those cases inapposite. New York has no legislation or constitutional amendment specifically declaring that same-sex marriages are against the public policy of the state.
See C.M. v. C.C.,
F. Conclusion
We hold that Texas courts lack subject-matter jurisdiction to entertain a suit for divorce that is brought by a party to a same-sex marriage, even if the marriage was entered in another state that recognizes the validity of same-sex marriages. We must therefore proceed to consider whether the Texas laws compelling this result offend the Constitution.
Y. Texas Law Does Not Violate the Equal PROTECTION Clauses of the Fourteenth Amendment
The question presented is whether Texas law proscribing the adjudication of a petition for divorce by a party to a same-sex marriage violates the Equal Protection Clause of the Fourteenth Amendment.
A. The Equal Protection Clause of the Fourteenth Amendment
The Equal Protection Clause provides, “No State shall ... deny to any person within its jurisdiction the equal protection of the laws.” U.S. Const. amend. XIV, § 1. It is “essentially a direction that all persons similarly situated should be treated alike.”
City of Cleburne, Tex. v. Cleburne Living Ctr.,
B. Baker v. Nelson
The State contends that appellee’s equal-protection challenge is completely foreclosed by the United States Supreme Court’s 1972 decision in
Baker v. Nelson.
That case began as a suit in Minnesota state court in which two men sued for the right to obtain a marriage license.
Baker v. Nelson,
A summary disposition by the Supreme Court has very narrow precedential effect. Specifically, that precedential effect “can extend no farther than the precise issues presented and necessarily decided by” the Court’s action.
Ill. State Bd. of Elections v. Socialist Workers Party,
The issue presented in this case is distinguishable from the precise issues presented to and decided by the Supreme Court in Baker. The jurisdictional statement in Baker posed three questions to the Court:
1. Whether appellee’s refusal to sanctify appellants’ marriage deprives appellants of their liberty to marry and of their property without due process of law under the Fourteenth Amendment.
2. Whether appellee’s refusal, pursuant to Minnesota marriage statutes, to sanctify appellants’ marriage because both are of the male sex violates their rights under the equal protection clause of the Fourteenth Amendment.
3. Whether appellee’s refusal to sanctify appellants’ marriage deprives appellants of their right to privacy under the Ninth and Fourteenth Amendments.[ 6 ]
In all three issues, the Baker appellants argued that the Constitution compelled Minnesota to grant them a marriage li *672 cense and treat them as a married couple from then on. In the instant case, by-contrast, appellee does not complain of Texas’s refusal to recognize his marriage to H.B. on a going-forward basis. His complaint is that Texas law relegates him to a declaration of voidness, when a party to an opposite-sex marriage in otherwise similar circumstances would be entitled to a divorce.
Baker
is certainly relevant because it reaffirms the states’ preeminent role in the area of family law, and we accord
Baker
appropriate weight in our analysis of the equal-protection issue. But because
Baker
is distinguishable, we conclude that it does not control the disposition of the equal-protection issue presented in this case.
Cf. Smelt v. Cnty. of Orange,
C. The Standard: Strict Scrutiny or Rational Basis
An equal-protection challenge is examined under one of two tests: the strict-scrutiny test or the rational-basis test.
City of Cleburne,
The Supreme Court has described a “suspect class” as one “saddled with such disabilities, or subjected to such a history of purposeful unequal treatment, or relegated to such a position of political powerlessness as to command extraordinary protection from the majoritarian political process.”
Mass. Bd. of Ret. v. Murgia,
“[T]he Supreme Court has never ruled that sexual orientation is a suspect classification for equal protection purposes.”
Citizens for Equal Prot. v. Bruning,
Appellee poses several arguments in support of his position that homosexuals should be designated a suspect class. Ap-pellee, citing
Bowen v. Gilliard,
Appellee has not shown that Texas generally excludes homosexuals from the protections of its laws. In fact, appellee pointed out in the trial court that persons in same-sex relationships appear to be eligible to seek protective orders from domestic violence, thus undermining his own position. See Tex. Fam.Code Ann. § 82.002(b) (Vernon 2008) (permitting an adult member of a “dating relationship” to seek a protective order against violence, without regard to the sex of the members of the relationship).
Appellee argues that homosexuals are a politically powerless minority. This contention is presented without relevant authority or analysis, and we therefore reject it. We are aware of significant authority to the contrary.
See Romer,
Appellee also argues that homosexuals are a suspect class because they bear “obvious, immutable, or distinguishing characteristics that define them as a discrete group.” However, appellee does not identify or attempt to suggest the exact nature of such characteristics. Again, this contention is presented without relevant authority or analysis, and we therefore reject it.
Citing
City of Cleburne,
appellee asserts that strict scrutiny is justified because sexual orientation has no bearing on a person’s ability to “perform or contribute to society.” In
City of Cleburne,
the Supreme Court explained that legal classifications based on gender and illegitimacy call for heightened scrutiny because those attributes generally do not affect a person’s ability to contribute to society, thus making such classifications inherently sus-
*674
peet.
We conclude that homosexuals are not a suspect class, that persons who choose to marry persons of the same sex are not a suspect class, and that the Texas law at issue in this case does not discriminate against a suspect class.
Fundamental rights are rights that are “deeply rooted in this Nation’s history and tradition” and are “implicit in the concept of ordered liberty, such that neither liberty nor justice would exist if they were sacrificed.”
Washington v. Glucksberg,
Appellee characterizes the rights in question as the “freedom to marry a person of one’s own choosing” and the concomitant right to end such a marriage with a divorce. He points out that the Supreme
*675
Court has indicated that the right to marry is a fundamental right.
See Loving v. Virginia,
“[T]he limitation of marriage to one man and one woman preserves both its structure and its historic purposes.”
Goodridge v. Dep’t of Pub. Health,
Having concluded that the claimed right in question is properly defined as the right to marry a person of the same sex, we consider whether that right is “ ‘deeply rooted in this Nation’s history and tradition.’ ”
Glucksberg,
Because Texas’s laws stripping the courts of jurisdiction to adjudicate claims for same-sex divorce do not discriminate against a suspect class or burden a fundamental right, we evaluate the law under the rational-basis test.
D. Application of Rational-Basis Standard
The link between the classification adopted and the object to be attained affords substance to the Equal Protection Clause.
Romer,
Under the rational-basis test, a statute enjoys a strong presumption of validity, and the statute must be upheld if there is any reasonably conceivable state of facts that could provide a rational basis for the classification.
Heller v. Doe ex rel. Doe,
[A] State does not violate the Equal Protection Clause merely because the classifications made by its laws are imperfect. If the classification has some reasonable basis, it does not offend the Constitution simply because the classification is not made with mathematical nicety or because in practice it results in *677 some inequality. The problems of government are practical ones and may justify, if they do not require, rough accommodations — illogical, it may be, and unscientific. A statutory discrimination will not be set aside if any state of facts reasonably may be conceived to justify it.
Kiss,
Several courts have concluded that laws limiting the benefits of marriage to opposite-sex couples do not offend equal protection.
Id.
at 868-69;
Smelt,
We next consider whether Texas’s marriage laws are rationally related to the goal of promoting the raising of children in households headed by opposite-sex couples. We conclude that they are. Because only relationships between opposite-sex couples can naturally produce children, it is reasonable for the state to afford unique legal recognition to that particular social unit in the form of opposite-sex marriage.
See Standhardt,
The Texas Constitution and the Texas Family Code single out one particular social unit for purposes of defining a legally valid marriage in Texas: opposite-sex couples. Appellee asserts that because Texas law thus both defines and restricts formal recognition of the institution of marriage to opposite-sex couples, it thereby discriminates against and denigrates same-sex couples. We disagree. Texas law recognizes that only opposite-sex couples are naturally capable of producing children, and it gives participants in that kind of relationship the option of legal formalization, with the legitimate legislative goal of encouraging such formalization and thereby promoting the well-being of children. The state has decided that the general welfare does not require extending the same option to the members of other social units. Texas law does not recognize same-sex relationships as valid marriages. Texas law also does not recognize relationships that involve more than one man and one woman, such as bigamous and polygamous relationships (both of which involve at least one person of the opposite sex), as valid marriages. See Tex. Fam.Code ANN. § 6.202 (voiding marriage during existence of prior marriage); Tex. Penal Code Ann. § 25.01 (Vernon Supp.2009) (criminalizing bigamy). Appellee has not shown that the legislative history of the 2005 constitutional amendment defining marriage in Texas as limited to opposite-sex couples reflects any animus against same-sex couples. We cannot conclude that the State’s justification for its marriage laws lacks a rational relationship to legitimate state interests.
Appellee asserts there is a sharp distinction between the right to marriage and the right to divorce. While each is different, the difference does not advance appellee’s position. The laws specific to proceedings for divorce in Texas are an integral part of the State’s overall scheme to give special protections and benefits to married couples. Divorce is a mechanism for determining and resolving the legal obligations of the parties arising from or affected by their marriage. The State may reasonably conclude that provisions must be made for the peaceable resolution of irreconcilable disputes and the legal dissolution of the marital bond when its continuance would hinder rather than promote the goals of the marriage laws.
Appellee argues that a voidance action is not an adequate substitute for a divorce action in his case. He contends that he might not be able to pursue an action to declare his marriage void under section *679 6.307 because the State contends that he is not a party to a “marriage” at all. He purports to fear that the State would intervene in a suit for voidness and claim that the trial court lacks jurisdiction of that action as well. This argument is without merit. Section 6.307 provides, “Either party to a marriage made void by this chapter may sue to have the marriage declared void[.]” Tex. Fam.Code Ann. § 6.307(a). Same-sex marriages are made void by “this chapter,” i.e., by section 6.204(b) of chapter 6 of the family code. Thus, appellee could bring a suit to declare his marriage to H.B. void.
Appellee argues that certain forms of relief, such as spousal maintenance, are available in divorce actions and not in voi-dance actions. He also argues that other benefits, like the spousal-communication privilege and the community-property laws, will not be available to him if he pursues a voidance action. These arguments are merely policy arguments that it would be better if the state gave same-sex couples the same marriage-related rights as opposite-sex couples. We have already concluded that the state may constitutionally treat opposite-sex couples differently from all other social units for purposes of marriage and divorce laws. Appellee’s arguments that he should be afforded rights such as the spousal-communications privilege and community-property rights must be addressed to the Texas Legislature.
Appellee argues that a declaration of voidness is not an adequate substitute for a divorce decree because other jurisdictions might not recognize a declaration of voidness as terminating his marriage to H.B. He points out that there is a lack of precedent showing that a declaration of voidness would be given full faith and credit by other states. He also argues that the wording of section 6.204(b) implies that a Texas declaration of voidness would have no effect outside of Texas because section 6.204(b) provides that a same-sex marriage is “void in this state.”
Id.
§ 6.204(b). The other statutes in the void-marriage subchapter of the family code provide that the defined marriages are simply “void.”
See, e.g., id.
§ 6.201 (“A marriage is void if one party to the marriage is related to the other [by specified blood or adoptive relationships].”). We disagree -with appellee’s contention. Section 6.307 is the provision that confers jurisdiction on the courts to declare any marriage void, and it does not contain the words “in this state” that appellee finds problematic in section 6.204(b). Under section 6.307, “[ejither party to a marriage made void by this chapter may sue to have the marriage declared void” — not “void in this state.”
See id.
§ 6.307(a). We reject appellee’s contention that a declaration of voidness in his case would not be effective in other jurisdictions as well. We also note, as the State points out, that in this case a decree of divorce would actually create greater uncertainty than a declaration of voidness, in light of existing Texas authority that a divorce decree would be void and subject to collateral attack.
See Míreles,
Citing a number of other sections of the family code relating to void marriages, ap-pellee contends that Texas law treating “same-sex marriages” as void stigmatizes him. He argues that by declaring same-sex marriages void, Texas has placed them in the “odious company” of unions that have traditionally been deemed “criminal almost by their very nature,” such as incestuous and bigamous marriages. The “guilt by association” caused by this juxtaposition, appellee contends, stigmatizes same-sex couples.
*680 Section 6.204 regarding same-sex marriages constitutes a separate and independent provision within the family code. It does not act in concert with the other provisions enumerated by appellee dealing with void marriages, all of which involve significantly different situations. 11 Appel-lee’s criticism thus attacks the location of this provision amid other provisions in the code that address other void marriages. Appellee’s strained comparison based upon the placement of section 6.204 within the family code not only misconstrues the meaning of section 6.204 but also suggests an effort by appellee to transform his social situation into one of self-imposed ignominy.
Appellee relies on
Romer
and
Lawrence.
In
Lawrence,
the Supreme Court held that statutes criminalizing homosexual sodomy violate the Due Process Clause.
The Court struck down the constitutional amendment at issue in
Romer
because it was “inexplicable by anything but animus toward the class it affects” and the Court could not conceive of a single proper legislative end advanced by the amendment.
Id.
at 632, 635,
Appellee’s bald assertion regarding section 6.204’s supposed “guilt by association,” without any legal analysis or precedent supporting it, is without merit. We conclude that the Texas laws in question *681 do not unconstitutionally stigmatize appel-lee.
E. Conclusion
The trial court erred by ruling that article I, section 82(a) of the Texas Constitution and section 6.204 of the Texas Family Code violate the Equal Protection Clause of the Fourteenth Amendment. Texas’s laws providing that its courts have no subject-matter jurisdiction to adjudicate a petition for divorce by a party to a same-sex marriage do not violate the Equal Protection Clause of the Fourteenth Amendment, a provision never before construed as a charter for restructuring the traditional institution of marriage by judicial legislation. 12
VI. Disposition
We conditionally grant the State’s petition for writ of mandamus and direct the trial court to vacate its order to the extent it strikes the State’s petition in intervention. The writ will issue only if the trial court fails to immediately comply.
We vacate the trial court’s second order denying the State’s plea to the jurisdiction. We reverse the trial court’s first order to the extent it denies the State’s plea to the jurisdiction, and we remand the case to the trial court with instructions to dismiss for lack of subject-matter jurisdiction.
SUPPLEMENTAL OPINION ON MOTION FOR EN BANC RECONSIDERATION
Appellee J.B. has filed a motion for en banc reconsideration. The motion is denied.
In his motion, Appellee asserts that we erred by ignoring his arguments on appeal that article I, section 32(a) of the Texas Constitution and section 6.204 of the Texas Family Code violate the Due Process Clause, the First Amendment right to free association, and the constitutional right to travel. In its amended order denying the State’s plea to the jurisdiction, the trial court ruled that section 6.204 of the family code violates all of those rights. But, as noted in our original opinion, that order was a legal nullity because it was signed during the automatic stay imposed by section 51.014(b) of the civil practice and remedies code.
Appellee did not present his constitutional challenges based on due process, the right to free association, and the right to travel to the trial court, and the State had no opportunity to respond to them in that court. We will not consider grounds for affirmance that were not presented to the trial court and to which the other side had no opportunity to respond.
Victoria Gardens of Frisco v. Walrath,
Appellee’s motion for en banc reconsideration is denied.
Notes
. "No State, territory, or possession of the United States, or Indian tribe, shall be required to give any effect to any public act, record, or judicial proceeding of any other State, territory, possession, or tribe respecting a relationship between persons of the same sex that is treated as a marriage under the laws of such other State, territory, possession, or tribe, or a right or claim arising from such relationship.” 28 U.S.C.A. § 1738C (West 2006).
. We also note the decision in
Littleton v. Prange,
. In Braddock, the question was whether decedent David Taylor was married to appellee Janice Taylor at the time of his death, as the trial court held. Id. at 41. The evidence showed that decedent was previously married to someone else and not divorced when he and Janice began holding themselves out as husband and wife in Texas. Id. at 42. Decedent and Janice then moved to California, which does not recognize common-law marriages, and continued their relationship. Id. Decedent divorced his prior wife, and then he died. Id. "Since no marriage between the deceased and appellee was ever contracted or celebrated in California, nor contracted in Texas after the impediment was removed,” the trial court erred by holding that Janice was decedent’s wife and heir. Id.
. In contrast to the New York cases, courts in other jurisdictions have held that they lack jurisdiction to dissolve same-sex marriages or civil unions despite the validity of those unions in the jurisdictions where they were celebrated.
See Rosengarten v. Downes,
. Appellee also asserts that "neither the parties nor the Court in Baker had even conceived of Equal Protection or Due Process claims on the basis of sexual orientation.” This statement is at odds with appellee's assertion two pages earlier in his brief that the Baker petitioner argued “that a state could not constitutionally refuse to marry same-sex couples under either the Due Process or Equal Protection clauses of the Fourteenth Amendment.”
. The State attached a copy of the appellants’ jurisdictional statement in
Baker
to its brief in this appeal. Ordinarily we do not consider matters outside the record.
In re Estate of Bendtsen,
. In
City of Cleburne,
the Court held that mentally retarded persons are not a suspect class, and that a zoning ordinance requiring a special use permit for homes for the mentally retarded failed the rational-basis test.
. Although
Glucksberg
is a due-process case rather than an equal-protection case, the test for ascertaining whether a claimed right is a "fundamental” right that triggers strict scrutiny is the same under both clauses.
See Lofton,
. In legal analysis, as in mathematics, it is fundamentally erroneous to assume the truth of the very thing to be proved.
Goodridge,
. Supporters of the amendment that became article I, section 32 of the Texas Constitution argued, "A traditional marriage consisting of a man and a woman is the basis for a healthy, successful, stable environment for children. It is the surest way for a family to enjoy good health, avoid poverty, and contribute to their community.” House Comm, on State Affairs, Bill Analysis, Tex. HJ.R. 6, 79th Leg., R.S. (2005).
. Appellee mistakenly refers to section 6.302 as voiding consanguineous marriages; we presume he intended to refer to section 6.201. He also erroneously refers to section 6.205 as voiding "quasi-incestuous” marriages. Section 6.205 addresses marriage to minors younger than 16; we presume he intended to refer to section 6.206, which voids marriage to a stepchild or stepparent.
.
Cf. Baker,
