While polygraph exams, which Noem pledged to use for department employees, are typically not admissible in court, they are used by federal law enforcement agencies and for national security clearances.

Secretary Kristi Noem announced Friday that her agency has identified two individuals within DHS suspected of leaking sensitive information about Immigration and Customs Enforcement (ICE) operations,

Homeland Security Secretary Kristi Noem on Sunday announced new leadership at the agency tasked with immigration enforcement as she also pledged to step up lie detector tests on employees to identify those who may be leaking information about operations to the media.