Sharis Pozen will temporarily succeed Christine Varney, the Assistant Attorney General for the Justice Department's Antitrust Division, when Varney steps down this month, the department confirmed on Thursday.
Pozen is currently chief of staff in the department and has been a key adviser to Varney. Industry sources speculate that not much will change in the review of the AT&T merger with T-Mobile when Pozen takes over. Varney said when she announced her departure last month that she doubted it would affect the review.
Pozen takes the role on an "acting" basis. The Obama administration will then have to nominate Varney's official replacement, subject to Senate confirmation.
Prior to joining the Justice Department, Pozen was a partner at a law firm now known as Hogan Lovells. She has also worked at the Federal Trade Commission, including in a role reporting to Varney, then a commissioner.
Varney is joining New York law firm Cravath, Swaine & Moore.