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From The Rachel Maddow Show
Kris Kobach is the guy writing this new law. He is the attorney for Immigration Reform Law Institute which is tied to FAIR (Federal American Immigration Reform). Fair has been strongly supported by funds from Pioneer Fund. Pioneer describes itself as rooted "in the Darwinian-Galtonian evolutionary tradition and eugenics movement."
"For the last 70 years, the Pioneer Fund has funded controversial research about race and intelligence, essentially aimed at proving the racial superiority of white people. The group's original mandate was to promote the genes of those "deemed to be descended predominantly from white persons who settled in the original 13 states prior to the adoption of the Constitution"
And "FAIR, claims credit for writing Arizona's new immigration law".