Kristjen Nielsen

Kristjen Nielsen is an American attorney and government official who served as the Secretary of Homeland Security under President Donald Trump from December 2017 to April 2019. She played a key role in shaping and implementing immigration policies during her tenure, including the controversial family separation policy at the U.S.-Mexico border. Nielsen's management of the Department of Homeland Security was marked by significant focus on border security and immigration enforcement, reflecting the Trump administration's hardline stance on immigration.