[Ed. – You mean other than the fact that they’re here and commit them?]
We have a new study on whether there’s an association between crime and undocumented immigrants [sic]. Today the New York Times reports on the change in crime vs. the change in undocumented immigrants in about a hundred metro areas across the country over the period 2007-2016. In general, of course, crime rates have fallen during that time. But have they fallen more or less in areas with big growth in undocumented immigrants? Here are the results:
… [Y]ou certainly can’t say that crime goes up when undocumented immigration increases, but you can’t really say it goes down either. The trendline is basically flat given the quality of the data we have.
This has always made sense. The vast majority of undocumented immigrants come to America to work. The last thing they want is a run-in with the law, even for the most trivial offense. They have far more incentive to avoid criminal behavior than native Americans do.