From Reason.com:
Do immigrants commit more than their share of crimes? Most Americans think so. ... The criminality of newcomers to America's shores is a sticking point in the immigration debate, one that anti-immigrant think tanks such as the Center for Immigration Studies and the Federation for American Immigration Reform often return to. Just one problem: It's not real. In fact, most research, such as a 2008 report by University of California sociologist Ruben Rumbaut for the Police Foundation National Conference, 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/archives/2014/09/07/criminal-immigrants.