Anti-miscegenation laws in the United States

In the United States, many U.S. states historically had anti-miscegenation laws which prohibited interracial marriage and, in some states, interracial sexual relations. Some of these laws predated the establishment of the United States, and some dated to the later 17th or early 18th century, a century or more after the complete racialization of slavery. Nine states never enacted anti-miscegenation laws, and 25 states had repealed their laws by 1967. In that year, the U.S. Supreme Court ruled in Loving v. Virginia that such laws are unconstitutional under the Fourteenth Amendment to the U.S. Constitution.

The term miscegenation was first used in 1863, during the American Civil War, by journalists to discredit the abolitionist movement by stirring up debate over the prospect of interracial marriage after the abolition of slavery.

Typically defining mixed-race marriages or sexual relations as a felony, these laws also prohibited the issuance of marriage licenses and the solemnization of weddings between mixed-race couples and prohibited the officiation of such ceremonies. Sometimes, the individuals attempting to marry would not be held guilty of miscegenation itself, but felony charges of adultery or fornication would be brought against them instead. All anti-miscegenation laws banned marriage between whites and non-white groups, primarily black people, but often also Native Americans and Asian Americans.

In many states, anti-miscegenation laws also criminalized cohabitation and sex between whites and non-whites.