About Kirstjen Nielsen
Kirstjen Michele Nielsen 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. Sources told Politico that Nielsen had privately pushed for this executive order behind the scenes while at the same time saying publicly that the executive order could not be created. In 2012, Nielsen became the founder and president of Sunesis Consulting.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.