USA TODAYGovernors, senators urge GOP to unite behind RomneyUSA TODAYBy Catalina Camia, USA TODAY GOP front-runner Mitt Romney picked up some big-name endorsements today as Rick Santorum suspended his presidential campaign. Governors Terry Branstad of Iowa, Rick Scott of Florida and Bobby Jindal of Louisiana, ...Jindal backs Mitt Romney for presidentWWLIowa's governor backs Romney in GOP campaignSan Francisco ChronicleGov.