Some racial groups are more likely to intermarry than others.
Of the 3.6 million adults who got married in 2013, 58% of Native Americans, 28% of Asians, 19% of blacks and 7% of whites have a spouse whose race was different from their own.
Anti-miscegenation laws have played a large role in defining racial identity and enforcing the racial hierarchy.
The United States has many ethnic and racial groups, and interracial marriage is fairly common among most of them.
For Asians, the gender pattern goes in the opposite direction: Asian women are much more likely than Asian men to marry someone of a different race.
From the mid 19th to 20th centuries, many black people and ethnic Mexicans intermarried with each other in the Lower Rio Grande Valley in South Texas (mostly in Cameron County and Hidalga County).
The overall numbers mask significant gender gaps within some racial groups.
Among blacks, men are much more likely than women to marry someone of a different race.
Women are slightly more likely to "marry out" than men in this group: 61% of Native American female newlyweds married outside their race, compared with 54% of Native American male newlyweds.
Although the anti-miscegenation laws have been revoked, the social stigma related to Black interracial marriages still exists in today's society although to a much lesser degree.
For example, in 1880, the tenth US Census of Louisiana alone counted 57% of interracial marriages between these Chinese to be with black and 43% to be with white women.