Thomas Homan, acting director of U.S. Immigration and Customs Enforcement (ICE), dropped the hammer on Wednesday while speaking to hundreds of law enforcement officers in San Antonio at the Border Security Expo — warning that the days of people illegally entering the United States and getting away with it are coming to an end.

“If we get a clean DACA bill, shame on all of us,” Homan said, referring to the Obama's controversial Deferred Action for Childhood Arrivals program, as reported by the Washington Examiner. "You can’t address DACA and reward people that brought children here illegally and not address underlying reasons of DACA.”

In a fiery 40-minute speech, Homan said he would “never back down” from safeguarding America’s borders as he called for an end to “sanctuary cities” across the nation.

Sanctuary cities "bankroll the very criminal organizations that have killed Border Patrol agents and killed special agents in ICE," Homan said. "They’re not protecting immigrant communities like they say they are because these people are going to reoffend and commit crimes in the very communities in which they live.”

Homan slammed Democrats and the media for demonizing the men and women tasked with keeping America safe.

"I’m sick and tired of the vilification of the men and women of ICE and the Border Patrol," Homan said to what was described as a shocked audience. "It irritates me that a politician who has never held a badge and a gun, who doesn’t understand what we do every day, makes a decision of putting their own political careers ahead of the health and safety of a law enforcement officer. A shame!"

Fox News noted that Homan also said that he "100% support[s] the wall," and that "If you violate the laws of this country, if you enter illegally, which is a crime, it’s not going to be OK anymore."