John Lott, Jr., PhD, Dean's Visiting Professor at the State University of New York (SUNY) at Binghamton, in a Feb. 18, 2018 article, "Undocumented Immigrants, U.S. Citizens, and Convicted Criminals in Arizona," available at, stated:

“Undocumented immigrants are at least 142% more likely to be convicted of a crime than other Arizonans. They also tend to commit more serious crimes and serve 10.5% longer sentences, more likely to be classified as dangerous, and 45% more likely to be gang members than U.S. citizens…

Young convicts are especially likely to be undocumented immigrants. While undocumented immigrants from 15 to 35 years of age make up slightly over two percent of the Arizona population, they make up about eight percent of the prison population. Even after adjusting for the fact that young people commit crime at higher rates, young undocumented immigrants commit crime at twice the rate of young U.S. citizens. These undocumented immigrants also tend to commit more serious crimes.”

Feb. 18, 2018