Texas governor Rick Perry, who is embarking on a hard push to recapture the buzz that surrounded him when he first entered the race for the Republican presidential nomination, is doubling down on the "birther" issue and also deeming his rival Mitt Romney a "fat cat." In an interview with John Harwood of CNBC and the New York Times on Tuesday, Perry was asked why he was keeping the "birther" issue alive. During an interview with Parade Magazine published Sunday, Perry suggested he doesn't "have a definitive answer" to whether President Obama was born in the United States. Mr. Obama...