Interracial marriage in the United States has been fully legal in all U. states since the 1967 Supreme Court decision that deemed anti-miscegenation laws unconstitutional, with many states choosing to legalize interracial marriage at earlier dates.
Multiracial Americans numbered 9.0 million in 2010, or 2.9% of the total population, but 5.6% of the population under age 18.
Gurung & Duong (1999) compiled a study relating to mixed-ethnic relationships ("MER"s) and same-ethnic relationships ("SER"s), concluding that individuals part of "MER"s generally do not view themselves differently from same-ethnic couples.
In Social Trends in America and Strategic Approaches to the Negro Problem (1948), Swedish economist Gunnar Myrdal ranked the social areas where restrictions were imposed on the freedom of Black Americans by Southern White Americans through racial segregation, from the least to the most important: basic public facility access, social equality, jobs, courts and police, politics and marriage.
The vast majority of whites and an even larger majority of blacks approve of interracial marriages.