Throughout the first three days of the Republican National Convention, officials have highlighted a surge in what they call “migrant crime.” President Biden “has welcomed into our country rapists, murderers, even terrorists, and the price that we have paid has been deadly,” Gov. Greg Abbott of Texas claimed last night. The day before, Senator Ted Cruz of Texas said, “Every day, Americans are dying” in crimes committed by migrants. Donald Trump has made similar remarks on the campaign trail.

But there is no migrant crime surge.

In fact, U.S. rates of crime and immigration have moved in opposite directions in recent years. After illegal immigration plummeted in 2020, the murder rate rose. And after illegal immigration spiked in 2021 and 2022, murders plateaued and then fell.

Over a longer period, there is no relationship between immigration and crime trends. The number of foreign-born Americans has increased for decades, while the murder rate has gone up and down at different times, as these charts by my colleague Ashley Wu show:

Yes, some migrants have committed violent crimes. There are more than 45 million immigrants in the U.S., and invariably some of them — just like people of any other group — will do bad things. Similarly, thousands of native-born Americans commit violent crimes in any given week.

Trump and other Republicans have suggested that immigrants are especially likely to be criminals. They point to a few anecdotes. But the data shows the opposite: Immigrants are less likely to commit crimes. There are genuine issues with the border and illegal immigration, but more crime is not one of them.

More migrants, less crime

If more immigration led to more crime, you would expect that crime rates would spike along with immigration flows, locally and nationally. The statistics would show that migrants were disproportionately likely to commit criminal or violent acts. Instead, the opposite is true.

New York, Chicago and Denver have had an influx of immigrants in the past couple years. Over that same period, murder rates in those cities have fallen. Similarly, border counties in Texas have lower violent crime rates than the state and country overall, the crime analyst Jeff Asher has found.

The individual crimes committed by migrants that Trump and his allies highlight simply do not add up to a bigger trend.

In reality, immigrants are less likely to commit crimes than people born in the U.S. Immigrants have had lower incarceration rates — a measure for crime — than native-born Americans for at least 150 years, a recent study concluded. Undocumented immigrants have lower felony arrest rates than legal immigrants or native-born Americans, another study found.

Why? Consider migrants’ motives. Many risk their lives by crossing dangerous jungles, rivers and deserts through Latin America to reach the U.S. so they can find better jobs that offer higher pay. In many cases, they are fleeing crime and violence back home. If they came here illegally, they have an incentive to avoid trouble with the law so they do not get caught by the authorities and deported.

The bottom line

People have legitimate reasons to be frustrated with illegal immigration and to worry about what happens at the border. Liberal mayors have learned as much in the past few years; the surge of illegal immigrants to their cities has drained public resources, particularly housing. A porous border also contributes to security concerns, such as the flow of fentanyl and the risk of terrorism. When an undocumented immigrant does commit a crime, it can lead to a sense of lawlessness and chaos.

But more immigration has not caused more crime. The myth that crime is up can perpetuate stereotypes and racism. Immigrants who arrived in New York recently told The Times that local residents were often hostile. They make rude comments under their breath or move away in subway cars. One Venezuelan lamented that people now saw all migrants in the same way: “violent.”

Related: The brother of a woman killed on a scenic trail — a crime in which an undocumented immigrant has been arrested — spoke at the Republican convention.

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