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Tom Homan, the acting director of Immigration and Customs Enforcement (ICE), says he was "stunned" and "sickened" by the not guilty verdict in the Kate Steinle murder trial.

Jose Ines Garcia Zarate, an illegal immigrant who had been deported multiple times, shot and killed Steinle while she was walking on a San Francisco pier in July 2015.

The shooting sparked a national debate over sanctuary cities, which refuse cooperate with federal authorities in enforcing U.S. immigration law.

Homan noted that Zarate, a multiple-time felon, was released from a San Francisco jail about three months before the shooting, despite a federal request that he be held for deportation.

"This isn't the America I grew up in," Homan said. "For a city to knowingly release a public safety threat back into the public is just ridiculous."

He noted that sanctuary cities are fighting a legal battle with the Justice Department, which is trying to withhold federal funding from cities that don't cooperate with federal immigration authorities.

"They want to fund sanctuary cities to keep illegal aliens in, but they don't want to fund the border wall to keep them out. To me, that's backwards," Homan said.

Watch more above.

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