Rep. Paul Ryan, the GOP vice presidential candidate, is joined by his mom, Betty Douglas, as he assures Florida seniors that their Medicare — which has turned into a major campaign issue — will be preserved under Mitt Romney's plan.Libertarians Look to Make Waves With JohnsonOPINION: Johnson Could Cost Obama, RomneyCheeseheads Welcome Ryan at HomecomingObama Renews Push for Proposals to Halt Teacher Layoffs