Kirstjen Nielsen

"They wanted 10 cities, thousands of targets," a Homeland Security Department insider told The Washington Post.

Ronald Vitiello's "knowledge and expertise as a seasoned law enforcement professional has been invaluable to DHS," said former Homeland Security Secretary Kirstjen Nielsen.

ABC host said if Trump really wanted to put people in cages, "he should start with Eric and Donald Junior."

The evidence showed Obama in the White House in a series of adorable images with children.

Representative Alexandria Ocasio-Cortez criticized the former homeland security secretary for her role in the president's "zero tolerance" immigration policy, which led to family separations at the border.

Kirstjen Nielsen, who recently resigned as homeland security secretary, was on a trip to meet European allies as President Donald Trump threatened to shut down the U.S.-Mexico border.

Claire Grady's resignation comes amid a Trump administration shakeup in recent days which has seen several top officials ousted from their roles.

"Whether it is John Kelly, Kirstjen Nielsen or whoever comes next, Trump's real DHS secretary has always been Stephen Miller," United We Dream's advocacy director said.

"I don't know if he's had that conversation or not," a White House spokesman said of restarting family separations.

The Fox News Monday morning crew said Nielsen was tasked with an "impossible" and "thankless" job.

Grady reportedly has no intention of stepping aside for Customs and Border Protection Commissioner Kevin McAleenan to become acting secretary.

President Donald Trump reportedly demanded that Homeland Security Secretary Kirstjen Nielsen take measures, including some of which were illegal, to stop all migrants from seeking asylum.

"She was willing to own the toughest parts, the most criticized parts of President Trump's immigration policy," Washington Examiner correspondent David Drucker said.

Nielsen often defended the president's crackdowns on immigration, but that never stopped him from criticizing her.

Immigration officials struggle with "huge backups to process folks into the country," Department of Homeland Security Secretary Kirstjen Nielsen said.

Nielsen told Fox News' Tucker Carlson that every option was on the table to stop illegal immigration into the U.S.

Detainees were forced to sleep on the dirt outside in 37-degree temperatures with only thin sheets, the ACLU said in a complaint filed with the Department of Homeland Security.

Secretary Kirstjen Nielsen's accusation came the same day an autopsy report revealed that an 8-year-old boy who had died in U.S. Border Patrol custody in December succumbed to the flu and a bacterial infection.

Homeland Security Secretary Kirstjen Nielsen took issue with the use of the word "cages" to describe the detention facilities used for children.

"I have never refused to testify before the Committee," Nielsen said in a letter dated Wednesday. "I look forward to sitting down with you in the near future. We have much to discuss."

"Sarah, there were some discrepancies with some numbers," 'Fox & Friends' co-host Ainsley Earhardt said.

President Donald Trump, Homeland Security Secretary Kirstjen Nielsen and White House press secretary Sarah Huckabee Sanders continue to push this false claim to justify the president's demand for a border wall.

All eyes appear to be on the Department of Homeland Security chief as President Donald Trump continues his White House shake-up.

Speaking on "Fox & Friends" on Monday, Ronald Colburn downplayed the use of crowd-dispersing spray.

"DHS will not tolerate this type of lawlessness," Department of Homeland Security Secretary Kirstjen Nielsen said.

Rumors abound at the White House that Homeland Security Secretary Kirstjen Nielsen is on her way out, which has triggered speculation about who would replace her.

"I will not tolerate Mexicans or anybody else acting in a violent way towards our men and women on the border," Nielsen said.

"Russia is in many ways, fighting to stay relevant after the fall of the Soviet Union," the FBI head argued. "They're fighting today's fight," he said, while pointing out that China makes decisions with the future in mind.

On the heels of a government watchdog report detailing the administration's failed child separation practice, Democrats said they would push for a full investigation if they win control of the House.

"I don't want them to be able to whitewash it," he said. "I want them to have to come out and explain why these things are happening."