A quick google of segregation laws led to
this page, which shows examples of miscegenation laws in almost every state. I chose Arizona, 'cuz it's at the top of the list.
1865: Miscegenation marriages between whites with "Negroes, mulattoes, Indians, Mongolians" were declared illegal and void. The word "Descendants" does not appear in the statute, until...
1901: Miscegenation revision of the 1865 statute which added the word "descendants" to the list of minority groups. The revised statutes also stated that marriages would be valid if legal where they were contracted, but noted that Arizona residents could not evade the law by going to another state to perform the ceremony.