Secretary Nielsen was joined by White House and Department of Homeland Security (DHS) officials during a brief swearing-in at the White House. "I want to thank Deputy Secretary Elaine Duke for her exceptional leadership over the past four months - especially her work leading the response during the destructive Atlantic hurricane season".
Democrats complained that Nielsen lacks the experience needed to run a major agency with 240,000 employees. A lawyer and expert in cybersecurity, Nielsen is the first Secretary of DHS who has worked at the agency before.
She also created and managed the office of Legislative Policy and Government Affairs at the Transportation Security Administration.
On other topics, Nielsen said she agreed with Kelly that a U.S. -Mexico border wall is unlikely to be a physical barrier from "sea to shining sea". Republican Senator Lamar Alexander did not vote, and no Republicans voted against her confirmation.
That statement failed to allay the concerns of Harris - who still voted against Nielsen, who said in a statement that she "equivocated" on Dreamers - and earned her the scorn of the Bannon wing, which has characterized her as a threat to Trump's "populist-nationalist agenda" and an ally of the "Never Trump" movement.
John Binder is a reporter for Breitbart News.
Nielsen "is ready to answer this call to duty", Johnson said.
Bannon was ousted from the White House in August amid scrutiny from Kelly. Bush. endorsed Nielsen's nomination.
Senators approved Nielsen's nomination, 62-37, on Tuesday.
We have not seen any report about Nielsen's views on the Trump administration's position on whether "Dreamers", as those who qualified for USA residency under the Deferred Action for Childhood Arrivals (DACA) program are often called, should be allowed to stay in the United States.
"It is my greatest honor to serve as secretary alongside the remarkable men and women of DHS", said Secretary Nielsen.
"Under a rational bill these individuals would be able to become lawful permanent residents with a pathway to citizenship", a Reuters report said, quoting Dougherty. However, Dougherty's statement on October 3 indicated that the administration's termination of DACA was not as thorough as most people were led to believe.
Nielsen served as Kelly's deputy and followed him to the White House in July. Ultimately, however, it is the president and Congress who must define what our national immigration policy must be.