A self-uniting marriage is one in which the couple are married without the presence of a third-party officiant. Although non-denominational, this method of getting married is sometimes referred to as a "Quaker Marriage".
Although most states do not offer self-uniting marriage as an official option, Pennsylvania has recognized such marriages for centuries (due to its Quaker origins and history of religious tolerance) and has offered licenses for these marriages for decades. These marriages only require the signatures of two witnesses in place of an officiant.
The issuance of self-uniting marriage licenses is controversial, however. Some Pennsylvania counties do not offer this form of license at all. Others only allowed such marriages when license applicants could prove they were members of a recognized religion without clergy, such as Quakers, the Amish, and the Bahá'í Faith; however, in 2007, a Federal judge ruled that a Pennsylvania couple that was denied a self-uniting marriage on the basis of their secular beliefs must be allowed such a license.
Wisconsin allows self-uniting marriages, without asking questions, but a form must be signed that states that the government issuing the marriage license cannot guarantee that the marriage will be recognized in all contexts.
Colorado allows self-solemnization without requiring a special form of application or witnesses.
The District of Columbia allows couples to officiate their own wedding.
California allows "non-clergy marriage" by "members of a particular religious society or denomination not having clergy for the purpose of solemnizing marriage or entering the marriage relation," provided that specified forms, including the signatures of two witnesses, are properly completed and filed. An atheist couple in San Francisco reportedly were allowed to have a non-clergy marriage under this provision of California law, by entering "atheist" in the box for "religious society or denomination" on the non-clergy marriage form.
Maine exempts "Quakers or Friends" and "members of the Baha'i faith" from the requirement for a third-party officiant.
Nevada law provides that, "All marriages solemnized among the people called 'Friends' or 'Quakers,' in the forms heretofore practiced and in use in their meetings, shall be good and valid."