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Fact-checking 19 claims from Trump’s speech announcing his 2024 run

Trump is exaggerating how many people illegally cross the border. Moreover, most independent research contradicts the idea that illegal immigrants bring more crime. A 2018 study published in the peer-reviewed journal Criminology, led by Michael Light, a criminologist at the University of Wisconsin at Madison, examined whether places with higher percentages of undocumented immigrants have higher rates of violent crime such as murder or rape. The answer: States with larger shares of undocumented immigrants tended to have lower crime rates than states with smaller shares in the years 1990 through 2014.