• Sen. Joe Lieberman's (D-Conn.) communications director, Marshall Wittmann, is leaving. He will be replaced by the Senator's press secretary, Whitney Phillips.
• Mike Gruber, senior policy advisor on the Energy and Commerce Committee, is leaving to join the Grocery Manufacturers Association.
• Chief of staff to Sen. Ron Johnson (R-Wis.), Don Kent, is joining the Nickles Group.
• At the Environment and Public Works Committee, counsel Matthew Hite is leaving to join the US Chamber of Commerce.
• Chief counsel for the Subcommittee on Oversight and Investigations, Todd Harrison, is leaving. Deputy chief counsel Karen Christian will take over the position.