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Ben Shapiro said the idea of illegal immigrants committing crimes in the United States is one of the main reasons why Donald Trump was elected president. 

On "Fox News @ Night," Shapiro reacted to the acquittal in the murder of Kate Steinle, who was shot and killed by an illegal immigrant while she was walking on a San Francisco pier with her father in July 2015.

Jose Ines Garcia Zarate, who had previously been deported five times, was found not guilty of murder. He admitted that he picked up a previously-stolen gun, but maintained that the shooting was accidental. 

Shapiro, editor-in-chief of the Daily Wire, said Zarate should have at least been convicted of involuntary manslaughter, though the jury did not agree, only finding him guilty of being a felon in possession of a firearm.

Attorney Adrienne Elrod called it a "shame" for President Trump to use the case as a "political football," adding that the larger question remains what to do about the 800,000 or so DREAMers in the U.S.

Shapiro countered that the Kate Steinle case reinforces the "basic notion" of why Americans elected Trump a year ago. 

"The basic notion that an illegal immigrant can commit crimes in this country and then re-enter the country at will is why President Trump won and it's why President Trump ought to push for the construction of that barrier and ought to make sure that the American people are safe from predators like [Zarate]," he said. 

Watch the discussion above and don't miss Shannon Bream, every weeknight, LIVE at 11:00pm ET on Fox News Channel.

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