Barack Obama will appoint Eric Holder to the post of attorney-general, according to US media reports.
If confirmed, Mr Holder, 57, would be the first African-American to occupy the senior position.
He would also lead the administration's efforts to close the Guantanamo Bay prison camp, a move Mr Obama has singled out as a priority.
He served as deputy attorney-general under Bill Clinton and currently works for law firm Covington and Burling.
Courtesy of BBC News