Oklahoma

Amendment

Section 35. A. Marriage in this state shall consist only of the union of one man and one woman. Neither this Constitution nor any other provision of law shall be construed to require that marital status or the legal incidents thereof be conferred upon unmarried couples or groups.
B. A marriage between persons of the same gender performed in another state shall not be recognized as valid and binding in this state as of the date of the marriage.
C. Any person knowingly issuing a marriage license in violation of this section shall be guilty of a misdemeanor.

Statutes

Marriage Recognition Act (1996)

Recognition of marriage between persons of same gender prohibited.

A marriage between persons of the same gender performed in another state shall not be reconized as valid and binding in this state as of the date of the marriage.

43 Okl.St.Amm. § 3.1

Cases

On September 16, 2004, Lambda Legal filed a federal suit to overturn Oklahoma's adoption law  See Complaint

Websites

Government Website
Oklahoma Family Policy Council