A National Park Service employee tends to a tree on a ladder in the Jacqueline Kennedy Garden outside the East Wing of the White House, June 1, 2009.

A National Park Service employee tends to a tree on a ladder in the Jacqueline Kennedy Garden outside the East Wing of the White House, June 1, 2009.

(From left) Jared Bernstein, Chief Economic Advisor to Vice President Joe Biden, Carol Browner, Assistant to the President for Energy and Climate Change, Larry Summers, Head of the National Economic Council, and Austan Goolsbee, Chief Economist on the Economic Recovery Advisory Board make their way to the Green Room from the Grand Foyer of the White House after accompanying President Barack Obama for an announcement about General Motors and the Auto Industry, June 1, 2009.

(From left) Jared Bernstein, Chief Economic Advisor to Vice President Joe Biden, Carol Browner, Assistant to the President for Energy and Climate Change, Larry Summers, Head of the National Economic Council, and Austan Goolsbee, Chief Economist on the Economic Recovery Advisory Board make their way to the Green Room from the Grand Foyer of the White House after accompanying President Barack Obama for an announcement about General Motors and the Auto Industry, June 1, 2009.

President Barack Obama returns to the Green Room of the White House with Cabinet and Staff members after an announcement on General Motors and the Auto Industry, June 1, 2009.

President Barack Obama returns to the Green Room of the White House with Cabinet and Staff members after an announcement on General Motors and the Auto Industry, June 1, 2009.

A marble bust of President Abraham Lincoln is seen in the background as President Barack Obama makes an announcement about General Motors and the Auto Industry in the Grand Foyer of the White House, June 1, 2009.

A marble bust of President Abraham Lincoln is seen in the background as President Barack Obama makes an announcement about General Motors and the Auto Industry in the Grand Foyer of the White House, June 1, 2009.

President Barack Obama (background) walks to the podium in the Grand Foyer of the White House to make an announcement about General Motors and the auto industry June 1, 2009. In the foreground are members of his Cabinet, (left to right) Gary Locke, Secretary of Commerce, Ray LaHood, Secretary of Transportation, and Peter Orszag, Director of the Office of Management and Budget.

President Barack Obama (background) walks to the podium in the Grand Foyer of the White House to make an announcement about General Motors and the auto industry June 1, 2009. In the foreground are members of his Cabinet, (left to right) Gary Locke, Secretary of Commerce, Ray LaHood, Secretary of Transportation, and Peter Orszag, Director of the Office of Management and Budget.

A look at the right-side TelePrompTer prior to President Barack Obama’s announcement about General Motors and the auto industry in the Grand Foyer of the White House, June 1, 2009.

A look at the right-side TelePrompTer prior to President Barack Obama's announcement about General Motors and the auto industry in the Grand Foyer of the White House, June 1, 2009.

President Barack Obama grins during a morning meeting with Senior Staff in the Oval Office, June 8, 2009.

President Barack Obama grins during a morning meeting with Senior Staff in the Oval Office, June 8, 2009.

David M. Simas, Aide to Senior Advisor David Axelrod and Nancy-Ann DeParle, Director of the White House Office for Health Reform, take part in a health care briefing for President Barack Obama, in the Oval Office, June 1, 2009.

David M. Simas, Aide to Senior Advisor David Axelrod and Nancy-Ann DeParle, Director of the White House Office for Health Reform, take part in a health care briefing for President Barack Obama, in the Oval Office, June 1, 2009.