COLUMBUS, Ohio – President Barack Obama used the homey backdrop of a middle-class Ohio family's backyard Wednesday to try to show voters he shares their concerns about the economy, health care and Social Security. Jacket off and sleeves rolled up, Obama took questions from the Weithman family and a small group of their neighbors arrayed around picnic tables and lawn chairs. His message was familiar: The economy needs more work but it's getting better. "A lot of it is like recovering from an illness," the president said. "You get a little bit stronger each day." The event came toward the...