From Reason.com:
In fact, most research, such as a 2008 report by University of California, [Irvine] sociologist Ruben Rumbaut … finds that immigrants, including undocumented ones, are less prone to crime than are native-born Americans. Rumbaut finds that the incarceration rate of American-born males between 18 and 39 years of age was five times the rate of foreign-born males, and finds similar conclusions in a survey of other studies on the topic....

For the full story, please visit http://reason.com/blog/2015/06/30/donald-trump-is-a-blowhard-idiot-especia.