A co-author of the Heritage Foundation's new immigration report, which right-wing media have hyped despite even conservative criticism about its methodology, has long promoted inflammatory theories about the relationship between race and IQ in Hispanic immigrants, an unsurprising fact given his ties to extremist anti-immigrant organizations.

Dylan Matthews of The Washington Post's Wonkblog reported that Jason Richwine, a co-author of the Heritage report, asserts in his 2009 doctoral dissertation titled “IQ and Immigration Policy” that “there are deep-set differentials in intelligence between races.” Matthews wrote [emphasis added]:

While it's clear he thinks it is partly due to genetics -- “the totality of the evidence suggests a genetic component to group differences in IQ” -- he argues the most important thing is that the differences in group IQs are persistent, for whatever reason. He writes, “No one knows whether Hispanics will ever reach IQ parity with whites, but the prediction that new Hispanic immigrants will have low-IQ children and grandchildren is difficult to argue against.”

Matthews also included Richwine's dissertation abstract, which forwards the idea that the U.S. should not only select its immigrant pool based on IQ, but that immigrants and their future generations are not apt to obtain his desired level of intelligence [emphasis added]:

The statistical construct known as IQ can reliably estimate general mental ability, or intelligence. The average IQ of immigrants in the United States is substantially lower than that of the white native population, and the difference is likely to persist over several generations. The consequences are a lack of socioeconomic assimilation among low-IQ immigrant groups, more underclass behavior, less social trust, and an increase in the proportion of unskilled workers in the American labor market. Selecting high-IQ immigrants would ameliorate these problems in the U.S., while at the same time benefiting smart potential immigrants who lack educational access in their home countries.

His dissertation, however, was not the first time Richwine promoted these offensive claims. In July 2008, while Richwine was a research fellow at the American Enterprise Institute, he said in a panel discussion of the book The New Case Against Immigration, broadcast on C-SPAN, that “races differ in all sorts of ways, and probably the most important way is in IQ”:

The argument that immigrants themselves are no different from the ones that came 100 years ago I think is, is quite wrong, and I think that the major difference here is ethnicity -- or race, if you will. I think that race is important for two main reasons. One is that human beings as a species are a naturally tribal group of people. We have inside, outside, groups. We have families, for one example, where, you know, family comes first in virtually every society. And we tend to be very attuned to even small, trivial differences between groups. I don't mean to suggest I think this is a good thing, I wish we could be more universalist, but the reality is that we're not going to be that way, and we shouldn't be basing policy on that either.

The second reason I think race is important is that there are real differences between groups, not just trivial ones that we happen to notice more than we should. Races differ in all sorts of ways, and probably the most important way is in IQ. Decades of psychometric testing has indicated that at least in America, you have Jews with the highest average IQ, usually followed by East Asians, and then you have non-Jewish whites, Hispanics, and then blacks. These are real differences. They're not going to go away tomorrow, and for that reason, we have to address them in our immigration discussions and our debates.

Richwine's anti-immigrant language is reminiscent of that used by the Pioneer Fund, which the Southern Poverty Law Center designates as a hate group that “funds studies of race and intelligence, as well as eugenics, the 'science' of breeding superior human beings that was discredited by various Nazi atrocities.” The Pioneer Fund supports the notoriously anti-immigrant and fellow SPLC hate-group Federation for American Immigration Reform (FAIR), founded by nativist John Tanton who publishes The Social Contract Press. Richwine spoke at a 2010 event for The Social Contract Press on the “myth of immigrant crime,” and, according to the group, argued that “immigrant and illegal alien crime is higher than crime committed by other demographic groups.” After joining the Heritage Foundation's Domestic Policy Studies Department in January 2012, Richwine spoke at a Social Contract writing workshop last September about the “connection between culture and immigration” as part of a weekend event hosted by anti-immigrant and white nationalist organizations.

UPDATE: The Heritage Foundation issued a statement to BuzzFeed about Richwine's 2009 dissertation:

“This is not a work product of The Heritage Foundation. Its findings in no way reflect the positions of The Heritage Foundation,” Heritage VP of Communications Mike Gonzalez told BuzzFeed in a statement. “Nor do the findings affect the conclusions of our study on the cost of amnesty to the U.S. taxpayer.”

This post has been updated for clarity.