President Obama went up against Gov. Mitt Romney last night in a town-hall-style debate. After a lackluster performance during the first debate two weeks ago, the president had something to prove. By nearly all accounts, he came across much tougher and more engaged. He challenged his rival for the White House on differences of policy and plans for the nation’s future. The two men sparred over energy and economic policy, tax cuts and immigration. And they squared off over the best path to improve U.S. competitiveness and create jobs. Diane and her guests talk about what Americans learned from the candidates and whether it will make a difference in November.