Kirstjen M. Nielsen

Jane M. Harman

June 22, 2023

Jane Margaret Harman (née Lakes; born June 28, 1945) is the former U.S. Representative for California's 36th congressional district, serving from 1993 to 1999, and from 2001 to 2011; she is a member o...

Charles E. Allen

June 22, 2023

Charles E. Allen (born 1936) is an American public servant, notable for his roles at the United States Department of Homeland Security's Office of Intelligence and Analysis and, before that, the Centr...

Dan Prieto

July 18, 2024

Daniel B. Prieto served as the Director of Cybersecurity and Technology, and as the Director of the Defense Industrial Base Cybersecurity and Information Assurance (DIB CS/IA) Program in the Office of...

William Bratton

June 22, 2023

William Joseph Bratton CBE (born October 6, 1947) is an American businessman and former law enforcement officer who served two terms as the New York City Police Commissioner (1994–1996 and 2014–2016)....

Jessica Stern

July 18, 2024

Jessica Eve Stern (born February 11, 1958) is an American scholar and academic on terrorism. Stern serves as a research professor at the Pardee School of Global Studies at Boston University. Earlier s...

Sarah Sewall

July 18, 2024

Sarah Sewall (born August 21, 1961) is Executive Vice President for Policy at In-Q-Tel, a strategic investor for the national security community. A national security expert whose career spans governme...

Gary Tomasulo

July 18, 2024

Gary Tomasulo is Vice President of Corporate Security at American Airlines. He leads the airline’s corporate security team and represents American Airlines security-related interests and priorities at...

Jeanne Meserve

July 18, 2024

Jeanne Meserve is an International Security Analyst for Canada’s CTV News, and is host of the NatSec Tech podcast for the Special Competitive Studies Project. She has been an anchor and correspondent ...

: July 18, 2024

Kirstjen Michele Nielsen (/ˈkɪərstən/; born May 14, 1972) is an American attorney who served as United States Secretary of Homeland Security from 2017 to 2019. She is a former principal White House deputy chief of staff to President Donald Trump, and was chief of staff to John F. Kelly during his tenure as Secretary of Homeland Security.

Nielsen was confirmed as Secretary of Homeland Security on December 5, 2017. Nielsen is best known for implementing the Trump administration family separation policy. She resigned in April 2019.[1]

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