President Obama's top budget official, Peter Orszag, plans to step down later this year, White Houses sources said Tuesday, June 22, 2010. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

President Obama's top budget official, Peter Orszag, plans to step down later this year, White Houses sources said Tuesday, June 22, 2010. (AP Photo/Carolyn Kaster)