Immigration and Crime – What the Research Says

*The idea that immigrants cause an increase in crime has gotten a lot of attention recently. Trump sparked the debate with his comments about Mexican rapists, and the shooting of Kate Steinle added intensity to it. But data and research tell a different story. I consider Alex Nowreaseth to be a credible and well reasoned voice on immigration. In this piece he stakes his claims about immigrants and crime n researched statistics. VL


cato-logoBy Alex Nowraseth, Cato Institute

The alleged murder of Kate Steinle in San Francisco by illegal immigrant Juan Francisco Lopez-Sanchez has reignited the debate over the link between immigration and crime. Such debates often call for change in policy regarding the deportation or apprehension of illegal immigrants. However, if policies should change, it should not be in reaction to a single tragic murder.  It should be in response to careful research on whether immigrants actually boost the U.S. crime rates.

[pullquote][tweet_dis]If immigration policies should change, it should not be in reaction to a single tragic murder.  It should be in response to careful research.[/tweet_dis][/pullquote]

With few exceptions, immigrants are less crime prone than natives or have no effect on crime rates.  As described below, the research is fairly one-sided.

There are two broad types of studies that investigate immigrant criminality.  The first type uses Census and American Community Survey (ACS) data from the institutionalized population and broadly concludes that immigrants are less crime prone than the native-born population.  It is important to note that immigrants convicted of crimes serve their sentences before being deported with few exceptions.  However, there are some potential problems with Census-based studies that could lead to inaccurate results.  That’s where the second type of study comes in.  The second type is a macro level analysis to judge the impact of immigration on crime rates, generally finding that increased immigration does not increase crime and sometimes even causes crime rates to fall.

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Alex Nowrasteh is the immigration policy analyst at the Cato Institute’s Center for Global Liberty and Prosperity. His popular publications have appeared in the Wall Street Journal, USA Today, the Washington Post, Houston Chronicle, the Los Angeles Times, the New York Post, and elsewhere. His academic publications have appeared in the Journal of Economic Behavior and Organization, the Fletcher Security Review, and Public Choice. Alex has appeared on Fox News, Bloomberg, and numerous television and radio stations across the United States. He is the coauthor, with Mark Krikorian of the Center for Immigration Studies, of the booklet Open Immigration: Yea & Nay (Encounter Broadsides, 2014).

[Photo by Keith Allison/Flickr]
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