01/04/2011 10:43 am ET Updated May 25, 2011

Ron Klain Resigns: Biden Chief Of Staff Leaving Administration

WASHINGTON — Vice President Joe Biden says his chief of staff, Ron Klain, is leaving his post later this month.

Klain has been a longtime Democratic political operative and the White House said he helped foster a strong relationship between the vice president's and the president's staffs.

Klain also served as vice president Al Gore's chief of staff and was a key figure during the 2000 presidential election recount in Florida.

Klain will become president of Case Holdings, the parent company of an investment firm owned by Klain's former boss and AOL co-founder Steve Case.

His departure comes amid other changes in White House personnel and a restructuring of duties.

Biden issued the following statement on Tuesday:

"For 25 years, Ron Klain has been my friend and advisor. As my chief of staff in the White House, Ron has done an exceptional job of building my team, implementing my direction on top priorities, and providing invaluable counsel. He has also played a key role in establishing the strong, positive relationship that exists between my staff and the President's team. I am proud of the successes we have had over these two years, and am grateful for the role Ron played in achieving them. I wish him the best of luck as he takes this next step in his career."