The stated reason is Steven Rattner wants to return to private life and his family in New York City.
Fox News reported:
WASHINGTON -- Steven Rattner, head of the Obama administration's auto task force, is leaving that post and will be replaced by former steelworkers official Ron Bloom.
The administration said Monday that Rattner decided to return to private life and his family in New York City.
There could be other considerations.
From Michelle Malkin:
Hmmm. Maybe the SEC investigation is catching up to car czar Steven “Chooch” Rattner. He’s leaving his post to “return to private life.”
From the New York Times (Apr 21):
Two months after Steven Rattner left Wall Street for Washington, his private investment company is facing a widening investigation into corruption in public pension funds — and fighting for its future.
As state and federal authorities examine Mr. Rattner’s dealings with the New York State retirement fund, questions are emerging about his efforts to gain business from several other public funds, including ones in New Mexico and New York City. His private investment firm, the Quadrangle Group, is moving to calm anxious pension managers, who have entrusted the firm with hundreds of millions of dollars.