The Senate Banking Committee said Colin McGinnis will be its acting staff director while it searches for a successor.
Mr. McGinnis the former chief of staff to Sen. Paul Wellstone, succeeded Shawn Maher, who became the committee's staff director when Sen. Chris Dodd took the chairmanship after the 2006 elections.
Mr. Maher is leaving Capitol Hill to serve as the Obama administration's Senate deputy director of legislative affairs.