Interracial marriage has been legal throughout the United States since at least the 1967 U.S. Supreme Court (Warren Court) decision Loving v. Virginia (1967) that held that anti-miscegenation laws were unconstitutional via the 14th Amendment adopted in 1868. Chief Justice Earl Warren wrote in the court opinion that "the freedom to marry, or not marry, a person of another race resides with the individual, and cannot be infringed by the State." Interracial marriages have been formally protected by federal statute through the Respect for Marriage Act since 2022.
Historical opposition to interracial marriage was frequently based on religious principles. Many Southern evangelical Christians saw racial segregation, including in marriage, as something divinely instituted from God. They held that legal recognition of interracial couples would violate biblical teaching and hence their religious liberty. Roman Catholic theology, on the other hand, articulated strong opposition to any state-sanctioned segregation on the grounds that segregation violated human dignity. Since Loving, states have repealed their defunct bans, the last of which was Alabama in a 2000 referendum.