There is evi­dence that immi­grants are over­rep­re­sented in local prison sys­tems in Ari­zona and else­where. But overall, vio­lent crime is actu­ally lower than you would expect along the U.S. border with Mexico, says Ramiro Mar­tinez, who teaches crim­i­nology at North­eastern University.

In Texas, homi­cides are actu­ally a little bit lower in border coun­ties than they are in the rest of the state,” Mar­tinez says. “Not only in Texas, but also in New Mexico and Ari­zona, in Cal­i­fornia — more immi­grants means less crime.”

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