A former U.S. attorney who served as homeland security adviser in the George W. Bush administration is reportedly being considered for FBI director.

Ken Wainstein spoke with Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE and Deputy Attorney General Rod Rosenstein last week about the position, The Wall Street Journal reported Wednesday.

Wainstein — who is currently a partner at the law firm Cadwalader, Wickersham & Taft — served as the chief federal prosecutor in Washington, D.C., before joining the Bush administration as a top national security official in 2006.

Bush named him homeland security adviser in 2008, a position he held until the end of Bush's term.

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Wainstein was also one of 50 Republican national security officials who signed a letter last summer saying that President Trump could put national security "at risk," which could pose a challenge in the selection process.

Several lawmakers have taken themselves out of the running to replace former FBI Director James Comey, whom Trump fired earlier this month.

Trump said last week that he was "very close" to selecting a new director, but former Sen. Joe Lieberman (I-Conn.), originally thought to be the frontrunner for the job, is reportedly no longer Trump's top pick.