“laws pertaining to civil marriage were enacted to prevent miscegenation”
They were not.
My greatgrandmother hid the fact she was colored. It destroyed her marriage, and she had good reason to fear being labeled as a “negro”.
She looked white. Born in Memphis, TN, in 1874, she worked as a waitress for an Italian-Swiss family of emigrants from Switzerland. Later she would claim their surname and heritage to protect herself.
She married a man from Massachusetts, a pony soldier, but in Ohio someone outed her. Her son, my grandfather, with light sandy hair and pale gray eyes, was taken from her and stashed in a New England boarding house among strangers while his Dad was fighting the Indians.
If you choose not to know about laws forbidding marriage between whites with other races, then I feel pity for you.