President Barack Obama takes a question during a discussion with neighborhood families in the backyard of the Clubb family home in Des Moines, Iowa, Wednesday, Sept. 29, 2010. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

President Barack Obama takes a question during a discussion with neighborhood families in the backyard of the Clubb family home in Des Moines, Iowa, Wednesday, Sept. 29, 2010. (AP Photo/Charles Dharapak)