Constitutional Amendment - Declares that marriage in the United States shall consist only of a legal union of a man and a woman.
Prohibits any Federal or State court from having jurisdiction to determine whether the Constitution or any State constitution requires the legal incidents of marriage to be conferred upon any union other than a legal union between one man and one woman.
Provides that no State shall be required to give effect to any public act, record, or judicial proceeding of any other State concerning a union between persons of the same sex that is treated as a marriage, or as having the legal incidents of marriage, under the laws of such other State.