Today the term “miscegenation” more commonly refers to “interracial marriage”. In the United States, anti-miscegenation laws are laws that were passed to prohibit marriage between races; motivated in particular by a fear of freed slaves being able to marry white people. These laws existed in various states since before the United States was established. It wasn’t until 1967 that the U.S. Supreme Court ruled anti-miscegenation laws unconstitutional in the court case of Loving v. Virginia.
Wikipedia
Anti-miscegenation laws in the United States
Video
How Loving v. Virginia Led to Legalized Interracial Marriage
Further Reading
Anti-miscegenation laws in the United States (Duke University)
‘Loving’ and the History of Anti-Miscegenation Laws in Virginia and Washington (New York Public Library)