According to Politico, which refers to sources familiar with the matter, the U.S. administration intends to nominate Chad Wolf, a Homeland Security official, as the department's acting secretary.
Wolf, who is the undersecretary for the department's Office of Strategy, Policy and Plans, has "made significant progress to strengthen US border security, address the humanitarian crisis on the US Southwest Border, and improve the integrity of the US immigration system" a biography on the DHS website says.
Wolf helped establish the Transportation Security Agency after 9/11 and worked in the private sector as a lobbyist and consultant on security issues.
Trump has used the agency to focus on immigration, shifting its role as an umbrella counter-terrorism operation.
Wolf will replace acting DHS Secretary Kevin McAleenan, whose last day in the job was Thursday.
White House spokesman Hogan Gidley said McAleenan would step down after November 11 and Wolf would then assume the position.
A transition between the two DHS leaders hasn't taken place, according to an agency spokesperson.
A White House official said Trump had no plans to nominate Wolf to the job permanently.
Chad Wolf is now acting under secretary of Homeland Security for strategy, policy and plans.
Immigration hawks inside and outside the Trump administration pressed in recent weeks for the president to consider other candidates for the role.
The White House did not immediately respond to a Reuters request for comment. But the prospect of his appointment to head the DHS, by potentially circumventing the Federal Vacancies Act, was shut down by several Republican Senators this week. "It gives you great, great flexibility".
"He doesn't present as a firebrand", Noorani said of Wolf. The department initially wouldn't verify Wolf turn into next in line, asserting easiest that McAleenan turn into performing secretary.
"People should be particularly concerned that individuals are filling these roles simply to pursue a political extreme agenda and lack experience in these roles", said David J. Danelo, the executive director of policy and planning for U.S. Customs and Border Protection in the Obama administration.
Wolf started his career at the DHS in 2002, after 9/11, serving as an assistant administrator of the Transport Security Administration. He later lobbied on behalf of a firm that represented companies hiring foreign workers for more than a decade before returning to government.
He is to be the third person nominated for the position this year, with his predecessor occupying the post for half a year. He is still awaiting Senate confirmation for the position.