"The citizens of NYC are facing the deadly consequences of the sanctuary policies," DHS Acting Secretary Chad Wolf said.
Acting Deputy Secretary of the Department of Homeland Security Ken Cuccinelli said hate crime suspect Grafton Thomas lacked "American values" in a now-deleted tweet, suggesting that the crime may have happened since Thomas's father was allowed to stay in the U.S. under the 1986 amnesty law.
It comes after Akayed Ullah, 28, was convicted of six terrorism offenses last year and faces life in prison.
Former Maryland Governor Martin O'Malley launched into a "shame-invoking tirade on behalf of immigrant refugee children," according to witness Siobhan Houton Arnold.
"We need to be able to work without fear of being put on a secret government surveillance list or having alerts placed upon our passports," said journalist Kitra Cahana.
"Continued refusal to acknowledge physicians' concerns...is a failure of our government to protect not only the people held in detention, but all people within our borders," doctors said in a joint statement.
A privacy rights group has asked a judge to force the DHS to share information on its use of DNA testing on migrant families at the U.S.-Mexico border.
"Chad Wolf was at Nielsen's side, as the Trump administration tore thousands of families apart and threw children in cages," said Jess Morales Rocketto, the chair of immigration advocacy group Families Belong Together.
"Basic humanity and decency must be restored," said now-resigned DHS worker Travis Olsen.
The interview caught the attention of several reporters, who commented on the candid nature of Kevin McAleenan's words.
A fraudulent cancer screening system resulted in Medicare being being billed for over $2.1 billion in unnecessary costs, and, with 35 arrested, has become the "largest health care scam ever" according to the government.
"The FBI director testified last month, about 850 domestic terrorism investigations ongoing, a number of those with racially motivated, violent extremest ideologies behind them," Acting DHS Secretary Kevin McAleenan said.
"The situation is improving by every available metric, but, I want to be very clear that we remain at and beyond crisis levels in illegal crossings," said Acting Secretary of Homeland Security Kevin McAleenan.
"We won't sit back and allow the decades long bipartisan attack on immigrants to continue," Cata Santiago, a spokesperson for Cosecha Movement, said in a press release.
Acting DHS Secretary Kevin McAleenan pleaded for more funding at the border, but Michigan congresswoman Rashida Tlaib called it a "broken" system.
Defense Department documents obtained by Newsweek show U.S. Northern Command sent an urgent request for additional U.S. forces.
"It's intentional. It's a policy choice being made by this administration, and it's cruel and inhumane," said Representative Lauren Underwood, an Illinois Democrat.
"When you start preaching 'open borders,' 'we won't detain you,' that's when more people come and that's when we're going to lose the border," Tom Homan said.
Carlos Gregorio Hernandez Vasquez, 16, was found unresponsive on Monday during a welfare check at the Weslaco, Texas, Border Patrol Station.
"We do have a crisis at the border, but it's a refugee crisis. Not a crisis of illegal crossings," the former senior DHS official said.
U.S. Customs and Border Protection is struggling to manage the wave of migrants arriving and being detained at the border with Mexico.
The report does suggest that violence from Mexican cartels against Defense Department personnel working on the southwest border could increase.
The White House has said that the senior policy adviser to Trump is "absolutely immune" from congressional testimony.
Released by the Department of Homeland Security, the report suggested measures to address the recent "large-scale influx" of families arriving at the U.S.-Mexico border.
Defense Department documents obtained by Newsweek show a troop surge at the southwest border, a request made by the White House amid President Donald Trump's renewed push to stem the flow of undocumented immigrants.
"The fact that he still has influence on policy and political appointments is an outrage," the congresswoman tweeted.
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.
Nielsen told Fox News' Tucker Carlson that every option was on the table to stop illegal immigration into the U.S.