Jason Richwine, the coauthor of the conservative Heritage Foundation's
controversial study on the supposed $6.3 trillion cost of comprehensive immigration reform, has received much attention and criticism for his 2009 Harvard dissertation that
argued there was "a genetic component" to racial disparities in IQ. But this dissertation wasn't the first time Richwine had expressed such views publicly. In 2008, he told an audience at the American Enterprise Institute that "major" ethnic or racial differences in intelligence between the Irish, Italian, and Jewish immigrants who flocked to the United States at the turn of the 20th century and the immigrants coming to the US today justified severely restricting immigration.
Richwine's remarks, which he made as a resident fellow at AEI, did not receive much public notice at the time, but they go beyond the arguments presented in his 2009 dissertation. In that dissertation, "IQ and Immigration Policy," which was
first reported by Dylan Matthews of the Washington Post, Richwine argued for restricting immigration based on IQ differences, which he believes are partially the result of genetic differences between...