President Barack Obama is expected on October 18 to nominate Jeh Johnson to the next secretary of the U.S. Department of Homeland Security.
Johnson served as a top lawyer in the Defense Department during Obama's first term as president.
If confirmed by the Senate, Johnson would succeed Janet Napolitano, who stepped down earlier this year.
His nomination requires Senate confirmation.
Johnson is known for playing a role in ending the American military's ban on gays serving in the armed forces.
He was also involved in the Obama administration's deliberations over the legality of using drones to target militants.
The Department of Homeland Security's responsibilities include efforts to protect against, and respond to, terrorist attacks and disasters.
Based on reporting by Reuters, AP, and dpa