The term's historical use in contexts that typically implied disapproval is also a reason why more unambiguously neutral terms such as interracial, interethnic or cross-cultural are more common in contemporary usage.
Intermarriage occurred significantly from the very first settlements, with their descendants achieving high rank in government and society.
To this day, there are controversies if Brazilian class system would be drawn mostly around socio-economic lines, not racial ones (in a manner similar to other former Portuguese colonies).
In 1967, the United States Supreme Court unanimously ruled in Loving v.
Virginia that anti-miscegenation laws are unconstitutional. With this ruling, these laws were no longer in effect in the remaining 16 states that still had them.
A contemporary usage of this metaphor was that of Ralph Waldo Emerson's private vision in 1845 of America as an ethnic and racial smelting-pot, a variation on the concept of the melting pot. S on the desirability of such intermixing, including that between white Protestants and Irish Catholic immigrants, were divided.