Well, I think that black people and Mexican people in this country have a different history. Therefore there is also a very different coupling relationship dynamic between Mexicans and whites as opposed to blacks with whites. To be honest, I'm not a huge expert on this, but I think that it's safe to say that this is highlighted in the statistic that shows that white woman/Hispanic male marriages are as successful as white/white unions.
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I guess that there isn't as distinct of a racial/ethnic barrier as there is with black man/white woman coupling. This study also showed, however, that ethnic women marrying white men had little to no effect on the rate of divorce. Something that I found
really interesting, though, was that white male/black woman marriages are
staggeringly successful. Even more so than white/white marriages.
Anyway, I think that the comfort with and affinity for white people in the Hispanic community leads to pursuit of and a high success rate with white people, and therefore the interracial marriage rate is high. The only thing I can't explain by pitting it this way is the lack of success that Asian husband white wife marriages have, as I know that Asians are known to exhibit similar traits.