Racism and immigration policy: The Richwine affair

The Economist:

JASON RICHWINE, a co-author of the widely trashed Heritage Foundation study on the the costs of immigration, “resigned” his post at Heritage Friday after his doctoral dissertation on immigration and IQ fell under a shadow of suspected racism. Harvard awarded Mr Richwine a PhD in 2009 for work arguing that Hispanic immigrants are less intelligent than non-Hispanic white Americans, that this gap has a genetic basis, and that immigration policy should discriminate against less intelligent groups of people, albeit under the cover of the language of “low skill” and “high skill” immigrants. Is this really racist?
Following a useful summary of Mr Richwine’s thesis, Robert VerBruggen of National Review makes a plea for letting science, rather than social opprobrium, settle scientific questions: