Rick Santorum may have won some hearts in Iowa, but there’s one person who’s not convinced. Sen. John McCain endorsed Mitt Romney at a town hall meeting in New Hampshire on Wednesday. McCain said that because of President Obama, "we are believed around the world to be weak" and "in decline." McCain added that New Hampshire is a state that will "catapault" Romney to victory. He later teased: "By the way, we forgot to congratulate him on his landslide victory in Iowa." McCain beat Romney in the 2008 nomination battle, but despite the old rivarly, Rick Santorum attracted the ire of McCain's long-time aide Mark Salter whenSantorum said in May that McCain "didn't understand how enhanced interrogation works."