Nielsen was Kelly's chief of staff when he headed the department and followed him to the White House, where she served as his principal deputy chief of staff.
CBN News National Security Correspondent Erik Rosales first reported that President Donald Trump would nominate Nielsen.
Throughout her confirmation process, Ms. Nielsen failed to demonstrate that she would provide the steady experienced leadership - free from political interference from the White House - that the department needs.
As Secretary of DHS, Nielsen will be in charge of 240,000 employees in 22 sub-agencies with broad jurisdiction and a range of responsibilities, including immigration enforcement, border patrol, aviation security, disaster preparedness, domestic counter-terrorism, the Secret Service, and the Coast Guard. They also cited concerns about possible White House interference in a recent DHS decision to send home thousands of Nicaraguans that have always been granted USA protection.
"I look forward to continuing this Administration's work to raise the standards for the security of our homeland in all areas - including securing our borders, protecting Americans from terrorist threats, and securing our cyber networks". Nielsen said the federal government should adjust its modeling and preparation for dealing with weather events related to climate changes, but refused to acknowledge the alleged human contributions to those changes. Kamala Harris (D-Calif.) in November that recipients of the Deferred Action for Childhood Arrivals program would not be a priority for deportation in her department.
Elaine Duke, a civil servant and the DHS deputy secretary, had been serving as acting secretary since Kelly's departure for the White House in July. He called Nielsen "a willing accomplice, helping to shape and implement this profoundly disturbing and un-American vision of our country".
House Judiciary Chairman Bob Goodlatte, a Republican, said in a statement that Nielsen would bring "the expertise and leadership needed to successfully run the Department". Trump did not make his selection for Kelly's replacement until October, when he announced Nielsen as his choice to lead the Department. With her understanding of the challenges facing our nation and her experience in prevention and preparedness, I believe that she will excel as the next Secretary of Homeland Security.