Department of Homeland Security (DHS) Secretary Kristi Noem sent a stern warning on behalf of President Donald Trump, to those planning on entering the U.S. illegally, saying, “Don’t even think about it.”

Noem announced Monday that she is launching a major multi-million-dollar ad campaign targeting illegal immigrants.

“Tonight, I’m announcing a nationwide and international multimillion-dollar ad campaign warning illegal aliens to leave our country NOW or face deportation with the inability to return to the US,” the DHS secretary said in a post on X. “This serves as a strong warning to criminal illegal aliens to not come to America. If they do, they will be hunted down and deported.”

Noem also shared a video of her delivering a message to illegal aliens thinking about coming to the U.S. illegally.

“Let me deliver a message from President Trump to the world. If you are considering entering America illegally, don’t even think about it,” she said. “Let me be clear. If you come to our country and you break our laws, we will hunt you down. Criminals are not welcome in the United States. For too long, weak leadership has left our borders wide open, flooding our communities with drugs, human trafficking, and violent criminals. Well, those days are over.

DHS SECRETARY NOEM APPEARS TO ACCUSE ‘CORRUPT’ FBI OF LEAKINGLA ICE RAIDS

“Under President Trump, we are defending American families and restoring their safety. If you try to enter illegally, you will be caught, you will be removed and you will never return,” Noem added. “Follow the law and you’ll find opportunity. If you break it, you’ll find consequences. Strong borders mean a stronger America. President Trump is making America safe again.”

Noem was the fourth member of the Trump administration to gain approval from the Senate, and she has taken the role to lead the department at a time when securing the border and tackling illegal immigration are top priorities for the new administration.

The administration has taken a number of actions to secure the border, including deploying the military, restarting wall construction and ending Biden-era parole programs. 

LARGEST LAPD UNION SLAMS ANTI-TRUMP PROTEST DIRECTIVES, SAYS ARRESTS ‘SHOULD BE A NO-BRAINER’ IN ALTERCATIONS

Meanwhile, Immigration and Customs Enforcement (ICE) has been launching deportation operations throughout the country to fulfill Trump’s promise of a “historic” operation.

At her confirmation hearing, Noem pointed to other parts of the DHS mission, including cybersecurity, disaster relief and counterterrorism. However, she emphasized that border security is a “top priority.”

BORDER CZAR TOM HOMAN SENDS MESSAGE TO FAR-LEFT OFFICIALS PUSHING BACK AGAINST MASS DEPORTATIONS: ‘GAME ON’

As governor, she pledged in 2021 not to take any more migrants from the Biden administration and also deployed the National Guard to the border in Texas. She also had experience with disaster response, working with federal officials to tackle floods that hit the state in June.

At her hearing, Noem was also asked about how she would work with border czar Tom Homan, who has been tapped to lead the deportation effort and secure the border.

CLICK HERE TO GET THE FOX NEWS APP

Noem responded by saying that she and Homan “work very well together and talk and communicate all the time. And we’ll be working together on a daily basis when we’re in our positions under the new administration. And I would say there’s no authority being planned to be taken away from the department or myself if I’m in the role.”

Fox News Digital’s Julia Johnson and Adam Shaw contributed to this report.